The Synaptic Delay Is Caused by the Time Required for Which

Multiple Choice

The synaptic delay is caused by the time required for which step of neurotransmitter release?

A) packaging of neurotransmitter into synaptic vesicles
B) calcium entry to trigger exocytosis
C) an action potential to move from axon hillock to axon terminal
D) the neurotransmitter to diffuse across the synaptic cleft
E) the synthesis of neurotransmitter