Your text emphasizes which of the following points about friendship?

a. friends tend to be similar to each other on a number of dimensions such as preference, behavior, and race
b. the diversity of friendships of children's parents tends to predict the extent to which children actively seek out others who are very different from themselves on a number of dimensions such as preference, behavior, and race
c. children who participate in organized sports tend to develop closer friendships than those who do not
d. children who participate in sports tend to be more competitive with their friends than those who do not

Ans: a. friends tend to be similar to each other on a number of dimensions such as preference, behavior, and race