Aperson who doesn't have enough calcium in his or her diet is at risk for developing bones that are weak and break easily. this condition is known as

It is called Osteogenesis

This condition is called osteoporosis. This is the most common bone disease. With this disease, our bones become weak and are more likely to break. People with osteoporosis most often breaks bone in the wrist, spine, and hip.

Its either c or d. i would go with d though, because im not sure if its legal in all of the us

Awould be the best answer