According to the mere exposure effect, we are most likely to feel attracted to people when:

Question

a. they are very similar to us.

b. they are very different from us.

c. we have never met them before.

d. we have met them on previous occasions.

I think it is a.

Answer 1

I was going to agree with you -- until I researched the mere exposure effect.

Check it out.

http://psychcentral.com/encyclopedia/2009/mere-exposure-effect/

Answer 2

I guess it is d.

Answer 3

Right.

Answer 4

The answer is (D), "We have met them on previous occasions."