Vitamin d is called the sunshine vitamin because: it calms our nerves. we must get it in our diet from plant foods that grow in the sun. it can be made in the skin by exposure to uv light. it is used to make serotonin, a neurotransmitter that enhances feelings of happiness.

It can be made in the skin by exposure to UV light

Osteocytes for me is the portion of the

(a) is not correct because one does not get increased cholesterol  from lifting weights.(b) is not correct because lifting weights cannot reduce the risk of a hereditary disease.(c) is not correct because back pain isn't a benefit! and plus, if he lifts weights properly, he should not have back pain.(d) is the correct answer because his ligaments will gain mass, making it easier for him to carry heavier weights and he will also be stronger!