Correct Answer:
A. P-Q-R-S
Explanation:
The correct answer is P-Q-R-S because this sequence builds a cohesive, progressive argument moving from a broad truth to a specific local action.
- Step 1 (Premise): Statement P introduces the foundational global premise that water is essential for all living organisms.
- Step 2 (Elaboration): Statement Q scales this premise directly down to human dependency, noting daily usage. Statement R immediately solidifies this by warning that survival is completely impossible without it.
- Step 3 (Conclusion): Statement S begins with the transition word 'Therefore,' perfectly wrapping up the argument with a logical call-to-action regarding conservation.
- Incorrect Options:
- Q-P-R-S is incorrect because starting with human usage (Q) before establishing the broader biological necessity of water (P) disrupts the natural logical hierarchy.
- P-R-Q-S is incorrect because separating statement Q from the final conservation thought breaks the natural narrative flow of human dependency.
- P-S-Q-R is incorrect because placing the final concluding statement (S) right after the opening sentence creates an abrupt, premature ending.