The Nurse Is Assisting with the Preparation of Materials for a Health

The nurse is assisting with the preparation of materials for a health fair aimed at promoting health in women. Which reason does the nurse recognize as a probable cause of an increase in the incidence of osteoporosis?

A) More adults are lactose intolerant.
B) Adults tend to be more sedentary.
C) The ages of adults have increased.
D) There is an increased number of smokers.