A.
Can be used to make extremely precise predictions about the age at which a child will reach various developmental milestones
B.
Indicate the maximum age at which a child can reach a particular developmental milestone and still be considered normal
C.
Indicate the average age at which individuals reach various developmental milestones
D.
Involve both
Correct Answer:
C. Indicate the average age at which individuals reach various developmental milestones
Explanation:
NA