Contraction of skeletal muscle fibers is stimulated by what type of neuron?

Motor neuron

Explanation:

A motor neuron is a neuron that is involved in a specialized kind of chemical synapse known as the neuromuscular junction. Within this synapse, the motor neurons terminal axon release the neurotransmitter acetylcholine, which induces muscle contraction via binding of post-synaptic receptors present on the muscle fiber.

a) carbon, hydrogen

b) carbon, hydrogen, oxygen, nitrogen

c) carbon, hydrogen, oxygen, nitrogen, phosphorus

d) sugar

e) amino acid

f) nucleotide

because it travels in smaller waves then all other colors, causing it to be the most visible color