Research indicates that the high school girls who have the most affectionate relationships with their mothers also tend to a. have the most intimate relationships with girlfriends. b. take longer than normal to establish their own independence and separate identity. c. have difficulty forming intimate relationships with boys. d. have somewhat less intimate relationships with girlfriends. e. take longer to form friendships with members of their social group.

The correct answer is A. have the most intimate relationships with girlfriends.
If a high school girl has a very close relationship with her mother, she is likely to have her closes relationships with her girlfriends as well, probably because she is so used to having a woman who is always there for her around. This doesn't mean that this girl will have troubles when it comes to relationships with boys - it just means she feels much more comfortable around her girlfriends rather than her boyfriends.