Four-Year-Olds Billy and Gary Occasionally Squabble When They Play at Gary's

Four-year-olds Billy and Gary occasionally squabble when they play at Gary's house, and Gary's mother wonders how best to manage their activities so as to promote good social skills. Research by Ladd and Golter suggests that Gary's mother should

A) check occasionally on the children to monitor their play but to be generally nonintrusive
B) keep a close eye on the children's activities, sometimes even joining in as a playmate
C) butt out entirely and let the children resolve whatever conflicts may arise
D) discourage peer interactions at home, thus leaving the training of social skills to nursery school personnel