Billy is able to convince his parents to get him his own phone line by pointing out advantages for his parents as well as himself. according to selman, billy has reached which stage of social perspective-taking?

Billy has reached the stage of social perspective taking called the mutual role taking. The mutual role taking is being defined as a way of an individual of assuming that one’s assigned task or role should be done or performed accordingly.

your answer would b. the missisipi river

hope i you : )

the correct answer is a