S1: One of the most dangerous insect pests is the locust. P: At first they look just like ordinary grasshoppers, which are harmless and unable to fly very far. Q: Until about thirty years ago, no one knew where locusts came from or why they appeared in the different countries they attacked. R: Then they change in appearance and develop wings which enable them to fly long distance. S: Then it was discovered that there are two stages in the life of locusts. S6: At this stage, they gather in huge numbers and rise from the ground on theri powerful wings in cloud. The Proper sequence should be: A. PSQR B. PSRQ C. QSPR D. QSRP

[amp_mcq option1=”PSQR” option2=”PSRQ” option3=”QSPR” option4=”QSRP” correct=”option4″]

The correct answer is D. QSRP.

The first sentence (S1) introduces the topic of the paragraph, which is the locust. The second sentence (P) describes the appearance of locusts in their early stages, when they look like ordinary grasshoppers. The third sentence (Q) describes the mystery surrounding locusts until about thirty years ago, when it was discovered that there are two stages in their life cycle. The fourth sentence (R) describes the second stage of the locust’s life cycle, when they change in appearance and develop wings. The fifth sentence (S) describes the behavior of locusts in their second stage, when they gather in huge numbers and fly long distances. The sixth sentence (S6) is a detail that could be added to the paragraph, but it does not fit logically into the sequence of events.

Here is a more detailed explanation of each option:

• Option A: PSQR. This option is incorrect because it puts the second sentence (P) before the third sentence (Q). The third sentence (Q) provides important information about the mystery surrounding locusts, which is necessary to understand the rest of the paragraph.
• Option B: PSRQ. This option is incorrect because it puts the fourth sentence (R) before the third sentence (Q). The third sentence (Q) provides important information about the discovery of the two stages in the locust’s life cycle, which is necessary to understand the fourth sentence (R).
• Option C: QSPR. This option is incorrect because it puts the third sentence (Q) before the fourth sentence (R). The fourth sentence (R) provides important information about the second stage of the locust’s life cycle, which is necessary to understand the third sentence (Q).
• Option D: QSRP. This option is the correct answer because it puts the sentences in the correct chronological order. The first sentence (S1) introduces the topic of the paragraph, which is the locust. The second sentence (P) describes the appearance of locusts in their early stages, when they look like ordinary grasshoppers. The third sentence (Q) describes the mystery surrounding locusts until about thirty years ago, when it was discovered that there are two stages in their life cycle. The fourth sentence (R) describes the second stage of the locust’s life cycle, when they change in appearance and develop wings. The fifth sentence (S) describes the behavior of locusts in their second stage, when they gather in huge numbers and fly long distances. The sixth sentence (S6) is a detail that could be added to the paragraph, but it does not fit logically into the sequence of events.