It's phycology, the study of the human's response to stimuli, which you are trying to find out whether or not the child can tell that they both have the same amount.
hope this helps:)
Answer:
♡hi there! ♡
good combo of words and numbers! ʕ •ᴥ•ʔ
hope I could help! have a great day
-madeline
✧・゚: *✧・゚:・゚✧*:・゚✧・゚: *✧・゚:・゚✧*:・゚✧
Explanation:
Mitochondria creates power for the cell which is why the are sometimes referred to as the powerhouse of a cell
Yes D is the right answer