Answer:
The options to consider are
a. Synapse
b. Soma
c. Neuron
d. Schwann cell
a. Synapse is the ANSWER
Explanation:
The SYNAPSE (neuronal junction)
is the site where the nerves appears closest to the effector cell in a muscle.
In this spot, electric nerve impulses among two neurons or a neuron and the effector cell in a muscle are transmitted.