It was to beP :before their school examinationQ :which was due to star...
Proper Sequence: RPQS
Explanation:
R: The sentence talks about the expedition which was the last expedition. Hence, it should be the opening sentence.
P: The sentence talks about an event that was to happen before the school examination. The event is not yet specified. Hence, P should follow R.
Q: The sentence talks about the event which was due to start. Since P talks about an event that was to happen before the school examination, Q should follow P.
S: The sentence talks about a time frame. It says that the event was to happen within a month. Hence, S should be the last sentence.
Therefore, the correct sequence is RPQS. Option C is the correct answer.
It was to beP :before their school examinationQ :which was due to star...
It makes sense right. The statement means to say that the last expedition before their school examination has not started yet and it is already due which is expected to start in a month. Hence R is the starting statement and S is a concluding statement.