You were called to the senior citizen center to treat a 69 year old woman who was found on the floor in the hallway. She was coming from the bathroom when she must have slipped on the waxed floor. You suspect she may have fractured her left hip. These injuries are especially common in elderly women because of:
a. Women's short legs
b. Motor vehicle collisions
c. Abnormal curvature of the hip
d. Loss of calcium
Answer: D