Which Would Be an Example of an Internalizing Problem in a Young

Which would be an example of an internalizing problem in a young child?

A) Choosing to sit alone and color during a free period
B) Frequently getting out their seat to talk to classmates rather than focusing on work
C) Throwing a temper tantrums and grabbing things from others.
D) Sitting away from others during lunch and looking sad
E) Angrily confronting another child during recess and pushing the child to the ground