Antidepressants such as Prozac are used to enhance the neuronal signaling in neurons that have serotonin receptors. Prozac specifically blocks the reuptake of serotonin in the synaptic cleft. This results in a net increase in serotonin available for excitatory signaling to the postsynaptic neuron. Which of the following process is most likely blocked by Prozac? a) nendocytosis of a serotonin-receptor complex in the presynaptic membrane
b) regulated exocytosis of serotonin in the presynaptic terminal
c) binding of serotonin to its receptor in the postsynaptic membrane
d) trafficking of the serotonin receptor to the postsynaptic membrane