Q: You are presented with the quiz "A fiber found only in mammals grows from a bulb under what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "hair is a fiber that is found only in mammals" and "hair grows from a hair bulb under the skin". So, what's the best answer to the question?

Options are:
(A). fur and fat;
(B). the mammal;
(C). light energy;
(D). the skin;
(E). the pelt;
(F). the animal;
(G). a cuticle;
(H). Exfoliation;
A:
(D).