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Arrange the following sentences in the correct order.
Options:
A. During the same period, minor incidents began being handled by an external medical contractor and were no longer included in the internal injury database.
B. This raised the possibility that some of the apparent improvement reflected changes in which events were counted.
C. Auditors therefore compared records from both the company and the contractor.
D. A manufacturing company reported fewer workplace injuries after introducing a safety programme.

Arrange the following sentences in the correct order.
Options:
A. Household income could therefore explain part of the observed association without device ownership directly causing higher educational spending.
B. A survey found that households owning more electronic devices also tended to report higher educational expenditure.
C. The researchers consequently examined whether the relationship persisted after accounting for household income.
D. Higher-income households were more likely both to purchase electronic devices and to spend more on education.

Arrange the following sentences in the correct order.
Options:
A. A coastal monitoring programme recorded a gradual decrease in water clarity.
B. Earlier measurements had been concentrated offshore, while newer measurements included many sites near river mouths.
C. River mouths often carry suspended sediment that reduces water clarity.
D. This suggested that the original decline might have resulted partly from the changing location of observations.

Arrange the following sentences in the correct order.
Options:
A. Some products sold by manufacturers to wholesalers were subsequently counted again when wholesalers sold them to retailers.
B. Analysts removed these overlapping transactions to avoid double counting.
C. A market report estimated total sales by combining figures submitted by manufacturers and wholesalers.
D. The corrected estimate was therefore lower than the figure obtained by simply adding all reported sales.

Arrange the following sentences in the correct order.
Options:
A. Analysts therefore examined total expenditure and passenger volume separately.
B. This distinction was important because a lower average cost per passenger did not necessarily imply a lower total operating cost.
C. Passenger numbers had risen much faster than the system's total operating expenditure.
D. A metro operator reported that operating cost per passenger had fallen significantly.

Arrange the following sentences in the correct order.
Options:
A. The finding made it difficult to attribute the entire increase in reported literacy to improvements in educational attainment.
B. Researchers examined how the change in assessment method might have affected the reported rate.
C. A national survey reported a substantial increase in adult literacy.
D. The latest survey had adopted a simpler self-reported question, replacing an earlier assessment that required respondents to demonstrate reading ability.

Arrange the following sentences in the correct order.
Options:
A. During the same period, the factory had shifted from complex customised orders toward simpler standardised products.
B. A factory reported higher output per worker after installing automated equipment.
C. The difference suggested that the original comparison had mixed together effects of the new machinery and changes in the types of orders processed.
D. Engineers compared production rates for similar product categories before and after installation.

Arrange the following sentences in the correct order.
Options:
A. A bus operator reported lower average journey times after introducing a traffic-management system.
B. Removing those routes from the calculation could reduce average journey time even without faster travel on the remaining routes.
C. The researchers consequently examined whether the apparent improvement remained after excluding the effects of the changed route network.
D. Several long and congested routes had also been discontinued during the same period.

Arrange the following sentences in the correct order.
Options:
A. Researchers separated participation rates by age rather than relying exclusively on the national average.
B. The result showed that the overall increase concealed opposite trends across different age groups.
C. Participation had risen substantially among older adults but declined slightly among adolescents.
D. A national report indicated that participation in organised sports had increased over five years.

Arrange the following sentences in the correct order.
Options:
A. The findings therefore suggested that differences in task allocation, rather than the assistant alone, explained much of the observed advantage.
B. A company reported that employees using an artificial intelligence assistant completed assignments considerably faster than their colleagues.
C. Yet this apparent improvement disappeared when the researchers compared workers performing tasks of similar complexity.
D. The initial comparison, however, did not account for the fact that the assistant was used mainly for routine assignments.

Arrange the following sentences in the correct order.
Options:
A. Archaeologists discovered substantially fewer wooden artefacts in one settlement than in a neighbouring settlement of similar age.
B. The first settlement occupied well-drained soil, whereas the second lay in persistently waterlogged ground.
C. Since waterlogged conditions can preserve certain organic materials that would otherwise decay, the difference in artefact counts required careful interpretation.
D. This raised the possibility that the two records reflected different preservation conditions rather than different levels of ancient activity.

Arrange the following sentences in the correct order.
Options:
A. The revised classification included several settlements that had previously been counted as rural.
B. However, the increase coincided with a change in the administrative criteria used to identify urban settlements.
C. A national report appeared to show a sudden increase in the proportion of households classified as urban.
D. The researchers therefore reconstructed the earlier figures using the revised definition before assessing the trend.

Arrange the following sentences in the correct order.
Options:
A. Individuals with existing health problems might also have been less able to exercise regularly.
B. Consequently, the observed association could not establish whether better health encouraged exercise or exercise improved health.
C. Because the survey measured exercise and health at the same time, it could not determine which condition preceded the other.
D. A survey found that people exercising regularly reported better health than those exercising infrequently.

Arrange the following sentences in the correct order.
Options:
A. The apparent improvement thus depended partly on which institutions remained in the dataset.
B. Analysts recalculated the average using a consistent set of institutions across the comparison period.
C. A report showed that the average financial performance of regional banks had improved substantially.
D. Several poorly performing banks had merged with larger institutions and no longer appeared as separate entries.

Arrange the following sentences in the correct order.
Options:
A. However, cameras had been installed preferentially in neighbourhoods that already possessed stronger private security arrangements.
B. A research team observed that neighbourhoods with extensive security-camera coverage reported fewer burglaries.
C. The resulting estimates were substantially less dramatic than those obtained from the original comparison.
D. The team therefore compared areas with similar security conditions before evaluating the additional contribution of cameras.

Arrange the following sentences in the correct order.
Options:
A. Historical records suggested that a mountainous region had experienced a substantial increase in average annual rainfall.
B. Since precipitation often varies with elevation, the expansion of the monitoring network could itself influence the regional average.
C. The researchers therefore distinguished between a change in actual rainfall and a change in the amount of rainfall captured by the network.
D. The newer network included several high-altitude stations that had not contributed to the earlier records.

Arrange the following sentences in the correct order.
Options:
A. The digital passages, however, contained shorter sentences and fewer unfamiliar words.
B. This suggested that the apparent increase in reading speed might partly reflect differences in the difficulty of the material.
C. Researchers repeated the comparison using passages matched for length and linguistic complexity.
D. Students reading digital passages appeared to finish more quickly than students reading printed passages.

Arrange the following sentences in the correct order.
Options:
A. Analysts compared the increase in the programme district with the increases observed elsewhere.
B. A district reported that employment rose after a vocational training programme was introduced.
C. The revised estimate consequently represented the programme's effect more cautiously than the original comparison.
D. Employment had also increased in nearby districts without the programme during the same economic recovery.

Arrange the following sentences in the correct order.
Options:
A. A school claimed that its students had become substantially more proficient in mathematics.
B. The claim was based on an increase in the proportion of students passing a newly redesigned assessment.
C. The new assessment, however, placed less emphasis on multi-step reasoning than the previous examination.
D. This difference made the reported improvement sensitive to the choice of measurement rather than merely to changes in student performance.

Arrange the following sentences in the correct order.
Options:
A. A major fire had destroyed part of the archive, including records from the decade in question.
B. Consequently, the scarcity of surviving contracts could not be treated as direct evidence of reduced commercial activity.
C. An archive contained far fewer commercial contracts from a particular decade than from the preceding one.
D. The historians therefore compared the surviving documents with independent records from neighbouring regions.