A stairway has 6 steps. Is a handrail required? A) A handrail is required

B) A handrail is not required

C) Double handrail are required

D) Only noising is required.

A. A handrail is required

t think its A, a handrail is required

these  signals travel  down a part of the neuron called the axon, which is like a wire that carries the  signal  to othernerve  cells. on average a  nerve  cell sends a  signal  at about 50 meters per second, which is over 100  miles  an hour!