Answer:
The correct answer is option D
D. Mental health; IQ score
Step-by-step explanation:
If a 10-year-old can perform the same tasks as the average 15-year-old, then the child's __mental health__ is 15 and _IQ score___ is 150.
Mental healths has to do with the acceptable intelligence for a particular age while IQ (intelligence quotient deals with whether or not he/she has the average intelligence or exceeded the average intelligence of that age.