Concept:Para jumble: arrange sentences to form a coherent paragraph.
Explanation:Start with S1: "Life in a village is ideal."
P follows naturally: "Our villages are no longer dirty."
S elaborates on P: "Rather, they are highly clean and tidy."
Q adds another positive point: "Moreover, they are disease-free."
R gives the reason for these changes: "Because the village people are well-educated now."
This connects to S6: "They can no longer be considered backwards."
Thus the correct sequence of P, Q, R, S is P, S, Q, R → "PSQR".
Answer:Option B: PSQR.