Which theory of language acquisition combines several schools of thought to hypothesize that language development is produced through a combination of genetically predetermined predispositions and environmental circumstances that help teach language?

When children are playing by themselves but are watching each other while they do so, they are engaging in _______________ play

Fill in the blank(s) with correct word

A(n) _____ disorder can be broadly defined as a persistent disturbance or dysfunction in behaviour, thoughts, or emotions that causes significant distress or impairment.

A) mood B) mental C) personality D) anxiety