Vivian and steve met at work. at first they were just friends, but over time, they found themselves falling in love - or as vivian tells her friends, "steve just grew on me! " according to research in interpersonal attraction in interpersonal attraction, the most likely explanation for their attraction is
a. mere exposure.
b. personal attractiveness.
c. fate.
d. reciprocity of liking.

Mere exposure

Explanation:

Mere exposure effect is a tendency that prefers merely because something is familiar with the subject. for example, any song, movie, clothes, etc. This is also called the familiarity principle.  

For instance, if you are a caveman and you want to eat fruit. So you find out two fruit one is familiar and the other is not. So the caveman will eat the familiar fruit first rather than the second fruit.

This occurs naturally. It can be positive or negative. This procedure is also found in animals too. Thus in Vivian and Steve's case, both are effected by mere exposure effect.

answer; a cost benefit analysis;