Question

a nerve is a bundle of ________ carrying messages between the central nervous system and various parts of the body.
a ganglia
b sulci
c dendrites
d axons

Explanation:

A nerve is a bundle of axons. Axons are the long, slender projections of neurons that transmit electrical impulses (messages) away from the neuron's cell body. Ganglia are clusters of nerve cell bodies. Sulci are grooves on the surface of the brain. Dendrites receive signals (messages) and carry them towards the neuron's cell body.

Answer:

D. axons