Final answer:
Enhancing the release and binding of neurotransmitters strengthens the functional connection between two neurons at a synapse.
Step-by-step explanation:
The correct answer to the question is D) Enhancing the release and binding of neurotransmitters.
Strengthening the functional connection between two neurons at a synapse involves increasing the release and binding of neurotransmitters.
Neurotransmission is the process by which signaling molecules called neurotransmitters are released by the presynaptic neuron and bind to receptors on the postsynaptic neuron.
By enhancing the release and binding of neurotransmitters, the communication between the two neurons is strengthened, allowing for more efficient transmission of signals.