Concept:Paragraph jumble — arranging sentences logically to form a coherent passage.
Explanation:S1 states that people consider their country the best.
Q follows S1 by adding that no country is absolutely good, just as no person is thoroughly good.
R then logically continues by saying one must cultivate the ability to discern good from bad.
S and P together form a natural pair: "We have to keep what is good" (S) and "And discard what is bad" (P).
Finally, S6 concludes by saying we should accept whatever good we find in other countries.
Thus the correct sequence between S1 and S6 is Q, R, S, P.
Answer:Option C — QRSP.