Barrett is serving a two-year mission for his church at the age of 19. when he returns home from his mission assignment, he will decide whether or not to attend college and will make decisions about career and family. barrett's current status is

Moratorium

Explanation:

Identity moratorium is defined as mechanism in which a person tends to find self sense.Person can search the sense in path that should be carried out by him/her such as religion, occupation,ethics, studies etc.This situation can cause identity crisis .

According to the question,Barrett is experiencing identity moratorium. He is searching sense of himself .The search that he is carrying out is regarding  not going to college and instead build career and family.Thus, crisis of finding the identity is present in his mind.

b) to encourage free trade