Answer:
The correct answer would be option D. dopamine.
Explanation:
Dopamine is a catecholamine neurotransmitters produce from tyrosine. It plays a role in different pathways, is involved in many pathological conditions including the reward circuit, and addiction.
Dopamine is attached to reward center, so if you feel interested or excited for anything, then the levels of dopamine will increase in the prefrontal cortex. High level of dopamin motivates brain to remember facts or incidents presented to one.
Thus, the correct answer would be option D. dopamine.