What is the process by which neurotransmitters reenter terminal buttons and are repackaged for future use?

The master control for eating is:

a. stomach c. hypothalamus b. liver d. thalamus

Relative insensitivity to delayed rewards helps explain why it is:

A) common that people behave in ways to maximize their own long-term interests. B) easier to use punishment than reinforcement to control behaviour. C) difficult to engage in behaviours that have only long-term benefits. D) relatively easy for most people to save for retirement.