Which of the following is a true statement about an axon?

A) It encases and insulates most nuclei.
B) It is a treelike fiber projecting from a neuron.
C) It is extremely thin and has many branches.
D) It directs the manufacture of substances required for growth of neurons.

Axon

A long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.

Neurons

Neurons are the basic working units of the brain, specialized cells responsible for receiving, processing, and transmitting information through electrical and chemical signals.