The Nurse Is Teaching a Class on Osteoporosis Prevention to a Group

The nurse is teaching a class on osteoporosis prevention to a group of postmenopausal women.Which of these actions is the best way to prevent or delay bone loss in this group?

A) Taking calcium and vitamin D supplements
B) Taking medications to prevent osteoporosis
C) Performing physical activity, such as fast walking
D) Assessing bone density annually