Which of the following offers the best explanation of the fact that contacts with acquaintances decline over the course of adulthood while those with family and close friends increase?
a. socioemotional selectivity theory
b. disengagement theory
c. social network theory
d. activity theory

The answer that best explains the passage above is:

A. socioemotional selectivity theory

Explanation: Socio-emotional selectivity theory is when an aging person cut off social networks to focus on people that would emotionally support their needs.

answer; (d) none of the above;

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.