I am pretty sure the answer is B. hope this helps and if it is wrong pls tell me thanks! :)
Neuron
Neuron can be defined as excitable
cell that usually carries, processes and transmit impulses or electrical
signals. Thus, they are known to be basic unit of the nervous system which
includes the spinal cord and brain. However, the signals between s neurons occur
via certain connections called synapses.
Vesicles transport proteins to store or to deliver it out of the cell.