Which of the following is not a benefit of foreign trade?

a. it allows each country to produce the goods for which they have the lowest opportunity cost.

b. nations become dependent on each other

c. specialization creates better products

d. it is mutually beneficial because nations enjoy a bigger variety of products

And your answer is?

Am I right?

No. A is a benefit.

I choose b but I got it wrong

That was an unfairly trick question.

This is my second time taking the test but I choose b and I got it wrong

What is the "correct" answer?

Am not sure

I was pretty sure the answer was b but I got it wrong

B looks like the best answer to me. Please ask your teacher about it.