SI : Human ways of life have steadily changed. S6: Even if we try to do nothing, we cannot prevent change. P : Ancient Egypt - Greece - the Roman Empire - the Dark Ages and the Middle Ages - the Renaissance - the age of modern science and of modern nations one has succeeded the other; the history has never stood still. Q : About ten thousand years ago, man lived entirely by hunting. R : A settled civilized life only began when agriculture was discovered. S : From that time to this, civilization has always been changing. The proper sequence should be
- AQ R S P
- BQ P S R
- CQ S R P
- DP R S Q
Explanation
S1 notes that human ways of life have steadily changed. Q starts ten thousand years ago with hunting, R introduces agriculture and settled life, S generalizes to ever-changing civilization, and P lists the successive ages ending with modern science and modern nations. The order Q R S P (A) is the only coherent chain. Hence the answer is A.