That answer is A. Hopefully this helps.
Https://www.reference.com/science/plant-cells-bigger-vacuoles-animal-cells-6ce1d958f161267a#
This site has a very complete answer that is very thorough.
Answer:
"The axon, the long, thin part of the neurone along which the impulse passes, is covered in a fatty myelin sheath, which acts as an electrical insulator."
Explanation:
"The dendrites receive incoming nerve impulses from other neurons."
Hospolipid bilayer, with some protein, is what makes the cell membrane selectively permeable.
