A Mother Expresses Concern Because Her 5-Year-Old Child Frequently Talks

A mother expresses concern because her 5-year-old child frequently talks about friends who don't exist. What is the nurse's best response to this mother's concern?

A) "Have you considered a child psychological evaluation?"
B) "You should stop your child from playing electronic games."
C) "Pretend play is a sign your child watches too much television."
D) "It's very normal for a child this age to have imaginary playmates."