Answer: I think the answer is A.
Explanation: I think so because the sentence talks about the brain developing, which is changing.
I believe the answer is behavioral perspective
Behavioral perspective focus on how we can make individuals behave a certain way by by conditioning a certain stimulus-response relationships.
To achieve this, most of them would utilize reward or punishment to make the individuals lean toward a certain behavior.<span />
The answer is, Silk, Rice, and indigo! Hope this helps!