Final answer:
The correct answer to the question is b) Reuptake. It is the process by which neurotransmitters are reabsorbed into the neuron after being released into the synaptic cleft.
Step-by-step explanation:
The process of taking neurotransmitters back into the terminal buttons from which they were initially released and repackaging them into new synaptic vesicles for reuse is known as reuptake. After neurotransmission, the neurotransmitter needs to be removed from the synaptic cleft, allowing the postsynaptic membrane to reset for another signal. This can happen through diffusion, degradation by enzymes, or reuptake by the presynaptic neuron.