Which of the following is not positively influenced by physical activity?
a.
cardiovascular disease
b.
obesity
c.
osteoporosis
d.
allergies

C. Osteoporosis is a disease where increased bone weakness increases the risk of a broken bone. It is the most common reason for a broken bone among the elderly. Bones that commonly break include the vertebrae in the spine, the bones of the forearm, and the hip. Until a broken bone occurs there are typically no symptoms. Bones may weaken to such a degree that a break may occur with minor stress or spontaneously.

Ibelieve it's choice d.

Why don't give me a problem to work with and i will you with the problem