Answer:
the socio-emotional selectivity theory
Explanation:
68-year-old Norma has diverse friends of her who provide emotional support to her and her grandson has a large group of casual friends. Thus these patterns are consistent with the socio-emotional selectivity theory.
The socio-emotional selectivity theory is theory given by Laura L. Carstensen who states that as people grow in age and matures they try to invest their time and resources at useful and emotional things. According to this theory elderly people select those things and try to spend time with people who will provide them emotional and moral support at times of need.
Thus the answer is ---
"the socio-emotional selectivity theory"
