Why is it important for countries to diversify their economies?

A.One-resource economies ensure countries are well diversified.

B.One-resource economies protect a country from hazards of competition.

C.One-resource economies are vulnerable to outside factors that can leave the country with few or no sources of income.

D.One-resource economies leave the country with many varieties and sources of income.

2 answers

So, in order to solve this question, first rule out the 100% in-correct numbers.
First of all, A makes no sense, so that one is wrong. B is not correct, although the answer is the opposite of B.
That leaves C or D.
Which makes more sense?
hm.. id say C..?