The right answer is the pleasurable feeling from eating a good meal.
Dopamine is an addictogenous substance (so which drugs that stimulate its release) that stimulates the pleasure center (also called the reward system) so the other three propositions are right.
dopamine is related to addiction, whether it's cupcakes or cocaine. It is related to love and sexual desire. It is related to breast milk, movement, motivation, attention, psychosis.