A child who becomes lonely and refuses to play with others may be experiencing

A) protectionism.
B) introversion.
C) withdrawal.
D) psychosis.

The child who becomes lonely and refuses to play with others may be experiencing withdrawal, which is characterized by a lack of interest in social interaction and a preference for solitude. Protectionism and introversion may not necessarily involve a complete avoidance of social interaction, and psychosis is a severe mental disorder with symptoms that go beyond social withdrawal.