HELP NEEDED PLEASE!!
Which properties of nerve cells are most important for their ability to carry out their task in helping animals deal with sensory input?

A. Nerve cells are sometimes packed closely together and sometimes widely spaced

B. Nerve cells can carry signals and connect all parts of the body to the brain

C. Nerve cells can be damaged by a serious injury or by disease

D. Nerve cells grow and reproduce like other cells of the body

Please just tell me which one it is! Thanks! Have a great day!