They are most mainly consists of "Keratin"
So, option B is your answer.
Hope this helps!
Answer:
Sensory neurons.
Explanation:
The sensory neurons are the active neurons that is responsible for the sensing of any activity occur on the skin. This sensory neuron send messages to the central nervous system in order to get instructions for the muscles to do suitable actions. The motor neuron send messages from central nervous system to the muscles. The burning of feet sense by sensory neurons present in the feet so avoiding such burning, the individual makes a decision of going into the ocean fastly.
Sperm is a sex cell that is created by meiosis and is needed for sexual reproduction.
