Which of the following is recommended to promote children's social understanding?
A) A good way to help children have friends at school is to make everyone play together.
B) A good way to build social studies concepts is by explaining how the government works.
C) A good way to help children make friends at school is to give them plenty of time to interact with one another informally.
D) A good way to teach young children about caring for the environment is to study the Rain Forest.