Build English that wins marks.

Arrange the following sentences in the correct order.
Options:
A. They realised that changing two factors at once made it difficult to explain differences in flight distance.
B. The second experiment produced results that were much easier to compare.
C. They repeated the experiment using the same paper for every design.
D. Students initially tested paper aeroplanes made from different designs and different types of paper.

Arrange the following sentences in the correct order.
Options:
A. The review confirmed that a percentage had been copied incorrectly into the article.
B. An editor noticed that a published article contained a numerical claim inconsistent with the source report.
C. The newspaper corrected the online version and added a clarification.
D. The original report was checked to determine whether the article or the source contained the error.

Arrange the following sentences in the correct order.
Options:
A. A field survey repeatedly produced incomplete soil samples from rocky locations.
B. Team members compared their collection methods and identified a step that was often skipped when the ground was difficult.
C. The missing step was added explicitly to the field checklist.
D. The revised procedure reduced the number of samples that had to be collected again.

Arrange the following sentences in the correct order.
Options:
A. Volunteers found that sorting became slow because all donations entered through a single location.
B. They reviewed the workflow after the event to identify the main source of congestion.
C. A community donation drive received far more material than organisers had expected.
D. The organisers therefore arranged a second collection point for future events.

Arrange the following sentences in the correct order.
Options:
A. Researchers therefore compared universities with similar support programmes but different attendance-monitoring systems.
B. However, several of these institutions had also introduced additional academic support programmes during the same period.
C. This comparison was necessary to distinguish the possible effect of digital monitoring from that of additional academic support.
D. A study found that universities adopting digital attendance systems reported higher student attendance.

Arrange the following sentences in the correct order.
Options:
A. The newer surveys, by contrast, included substantial observation time during less favourable weather conditions.
B. Recent surveys recorded fewer butterflies than surveys conducted a decade earlier.
C. The researchers consequently questioned whether the apparent decline reflected a real change in the population.
D. Examination of the survey records revealed that older observations had been conducted mainly during peak butterfly activity.

Arrange the following sentences in the correct order.
Options:
A. A healthcare report showed that average spending per hospital visit had increased substantially.
B. Analysts therefore separated routine consultations from specialised procedures before comparing expenditure.
C. During the same period, specialised procedures had become a larger proportion of all recorded visits.
D. Such a shift could increase average expenditure even if the prices of individual services remained unchanged.

Arrange the following sentences in the correct order.
Options:
A. The municipality had also changed its reporting method to exclude certain commercial waste collected alongside household waste.
B. Investigators reconstructed the earlier figures using the new reporting definition.
C. A municipality reported a significant reduction in average household waste after introducing a recycling programme.
D. The apparent improvement therefore required further examination before being attributed to the new policy.

Arrange the following sentences in the correct order.
Options:
A. A technical update had changed how the platform counted certain recurring payments.
B. Consequently, the increase in recorded transactions did not necessarily indicate a corresponding increase in economic activity.
C. Previously, several small payments had been combined into single transactions, whereas the new system recorded them individually.
D. A financial platform reported that the number of daily transactions had nearly doubled.

Arrange the following sentences in the correct order.
Options:
A. This suggested that the apparent advantage of the new irrigation method might partly reflect differences in soil quality.
B. Researchers therefore compared yields from fields with similar soil characteristics.
C. Farmers using drip irrigation reported higher yields than those using conventional irrigation.
D. A closer examination revealed that drip irrigation had been adopted primarily on farms with more fertile soil.

Arrange the following sentences in the correct order.
Options:
A. The portal made submitting complaints considerably easier than the previous paper-based procedure.
B. A railway operator received more passenger complaints after introducing an online feedback portal.
C. These findings indicated that the raw number of complaints was an incomplete measure of service quality.
D. Passenger satisfaction surveys conducted independently showed little change during the same period.

Arrange the following sentences in the correct order.
Options:
A. Satellite images suggested that a region's forest cover had expanded substantially.
B. Scientists reprocessed the older images using a comparable classification procedure.
C. The resulting difference raised doubts about whether the apparent trend represented a genuine increase in forest cover.
D. The classification system used for recent images could identify sparse vegetation that the earlier system frequently missed.

Arrange the following sentences in the correct order.
Options:
A. Participation was voluntary, and employees already seeking advancement were more likely to enrol.
B. The researchers consequently treated the association as insufficient evidence that the training itself caused the difference.
C. This difference in motivation could have influenced promotion outcomes independently of the course.
D. Employees completing an optional leadership course were promoted more frequently than employees who did not attend.

Arrange the following sentences in the correct order.
Options:
A. Electricity use naturally varied throughout the year because of changes in temperature and daylight.
B. A city introduced a campaign encouraging residents to use less electricity.
C. This reduced the likelihood that seasonal changes would be mistaken for an effect of the intervention.
D. Investigators compared consumption during the campaign with consumption in the same season of previous years.

Arrange the following sentences in the correct order.
Options:
A. A government department reported that the average time required to approve applications had fallen.
B. Under the new procedure, incomplete applications were returned before being entered into the processing-time database.
C. Analysts recalculated processing time from the date applications were first received, including those requiring correction.
D. The adjustment showed that the apparent improvement was partly due to the exclusion of incomplete applications.

Arrange the following sentences in the correct order.
Options:
A. During the same period, another popular museum nearby had temporarily closed for repairs.
B. Some visitors who would normally have attended the closed museum may have chosen the renovated museum instead.
C. A historical museum recorded a sharp rise in visitors after renovating its main exhibition hall.
D. The investigators therefore examined whether the additional visitors represented new demand or simply a shift from nearby attractions.

Arrange the following sentences in the correct order.
Options:
A. Analysts examined both completed cases and the age of cases still pending.
B. Consequently, the average duration of completed cases was not necessarily representative of all cases entering the system.
C. Several complicated cases remained unresolved and therefore did not appear in the completed-case statistics.
D. A court reported that the average duration of cases completed during the year had declined.

Arrange the following sentences in the correct order.
Options:
A. The evidence therefore supported a more cautious interpretation of the apparent increase in agricultural productivity.
B. Because yield was calculated by dividing production by cultivated area, the revised denominator increased the reported yield.
C. Official statistics showed that crop production per hectare had risen considerably.
D. Investigators found that the reported cultivated area had been revised downward after a new land survey.

Arrange the following sentences in the correct order.
Options:
A. The platform had recently attracted a much larger number of active contributors.
B. A citizen-science platform reported a rapid increase in sightings of a rare atmospheric phenomenon.
C. The researchers therefore distinguished between an increase in recorded observations and an increase in the actual occurrence of the phenomenon.
D. With more observers looking for unusual events, the probability of recording an existing event had also increased.

Arrange the following sentences in the correct order.
Options:
A. A transport survey found that average passenger satisfaction had increased after a fare revision.
B. Researchers recalculated satisfaction using a constant proportion of occasional and regular passengers.
C. The adjusted results showed that much of the apparent difference reflected the changing composition of passengers.
D. The fare revision was followed by a decline in occasional passengers, who had previously reported lower satisfaction than regular commuters.