Fact 1: Smell is used for finding food by some animals. Fact 2: Smell receptors, nerve tissue that picks up smells, are located in the lining of the nose. Given the two facts above, receptors in the lining of the nose are:?
OPTIONS:
[a]. heat or cold;
[b]. larger than the nose;
[c]. tastebuds;
[d]. used to find food;
[e]. insect;
[f]. barrel-shaped;
[g]. segmented;
[h]. messengers;
[d].