They are most mainly consists of "Keratin"
So, option B is your answer.
Hope this helps!
The intellectuals will find it difficult
Answer: Motor neuron effector
If you accidentally touch hot surface, you automatically
pull your hand away from the object and this response is governed by a simple
combination of neurons called reflex arcs. The sensory neurons carriers the
impulse towards the central nervous system (CNS) then the interneuron carries
these impulses within the CNS, while the motor neuron carries impulse away from
CNS. Therefore, motor neuron is the last structure to respond to a reflex.
He dissected bodies for misconceptions about anatomy.
