Biological. I thought that the answer would be evolution but that is not one of the options. I think my answer is right. I hope it is.
Answer:
wearing head coverings (don't know why) meat eating, hand shakes because of a condition
B, heredity, is an uncontrollable risk factor. Heredity is the genes and predispositions we inherit from our parents, which we cannot control. Our diet, whether we smoke, and the amount of exercise we get is all within our control, but our heredity factors are not.
Central nervous system
Hope that helps.
You should draw a pineapple with an apple with lots of other fruits