Gladiator59
It would not be surprising to discover that the trade routes between China and the West were opened many centuries, even millennia, earlier than 200 B.C., contrary to what is currently believed. After all, what made the Great Silk Road so attractive as a trade route linking China and the West—level terrain, easily traversable mountain passes, and desert oases—would also have made it an attractive route for the original emigrants to China from Africa and the Middle East, and this early migration began at least one million years ago.
That a migration from Africa and the Middle East to China occurred at least one million years ago figures in the above reasoning in which one of the following ways?
(A) It is cited as conclusive evidence for the claim that trade links between China and the Middle East were established long before 200 B.C.
(B) It is an intermediate conclusion made plausible by the description of the terrain along which the migration supposedly took place.
(C) It is offered as evidence in support of the claim that trade routes between China and the West could easily have been established much earlier than is currently believed.
(D) It is offered as evidence against the claim that trade routes between China and Africa preceded those eventually established between China and the Middle East.
(E) It is the main conclusion that the argument attempts to establish about intercourse between China and the West.
Great Silk road was attractive terrain long ago too.
Early migration began one million years ago.
- It would not be surprising to discover that the trade routes between China and the West were opened many centuries, even millennia, earlier than 200 B.C., contrary to what is currently believed.
The argument provides evidence for a possibility - that the trade routes between China and West were opened many centuries earlier than is currently believed.
(A) It is cited as conclusive evidence for the claim that trade links between China and the Middle East were established long before 200 B.C.
The argument does not give conclusive evidence. It just says why it is possible and perhaps probable.
(B) It is an intermediate conclusion made plausible by the description of the terrain along which the migration supposedly took place.
Again, not an intermediate conclusion. Note that the argument gives no conclusion. It just says that it would not be surprising if this turned out to be true. It doesn't say that anything is true. An intermediate conclusion is a conclusion too which leads to a final conclusion of the argument, but the argument gives no conclusion.
The evidence given by argument would just make it likely for it to be true. It doesn't establish at all that this indeed was the case.
(C) It is offered as evidence in support of the claim that trade routes between China and the West could easily have been established much earlier than is currently believed.
Correct. The argument does give evidence in support of the claim that routes could have been established much earlier.
(D) It is offered as evidence against the claim that trade routes between China and Africa preceded those eventually established between China and the Middle East.
Incorrect. Opposite to what it actually does.
(E) It is the main conclusion that the argument attempts to establish about intercourse between China and the West.
Irrelevant
Answer (C)