Final answer:
Inhibition of neural activity can occur due to events at both the presynaptic and postsynaptic levels, encompassing the release, reception, and subsequent effects of neurotransmitters on the neurons involved.
Step-by-step explanation:
Inhibition of neural activity can result from both presynaptic events and postsynaptic events. This process occurs at the synapse, the junction between neurons. Neurotransmitters released from the presynaptic neuron can bind to receptors on the postsynaptic neuron, causing either excitatory or inhibitory effects. An example of an inhibitory neurotransmitter is GABA (gamma-aminobutyric acid), which causes hyperpolarization of the postsynaptic membrane, thereby reducing the likelihood of an action potential being generated. Also, presynaptic mechanisms can lead to the reduction of neurotransmitter release, contributing to synaptic inhibition. Therefore, the correct answer to the student's question is C) A and B.