I think it is (A) using “you” messages
Answer:
Their still growing, developing, and often play and hurt themselves in a way that adults don't.
Explanation:
Answer: D. Recessive Gene
Explanation: In order for a recessive trait to appear, both parents need to have that specific recessive gene.
Exp: Curly hair is a recessive trait. Both parents need the curly haired gene in order for their child to have curly hair.
