By this age more bone is removed than replaced.

By this age more bone is removed than replaced.

• A. 25
• B. 40
• C. 30
• D. 35

Answer: (D)

Bone remodeling involves a balance between bone removal (resorption) and bone formation. In youth and early adulthood, formation keeps pace with or exceeds resorption, building peak bone mass. After peak bone mass is reached, the remodeling balance gradually shifts so that resorption outpaces formation. By mid-adulthood, there is net bone loss because more bone is removed than replaced. That’s why this age range fits best for the statement.

Bone remodeling involves a balance between bone removal (resorption) and bone formation. In youth and early adulthood, formation keeps pace with or exceeds resorption, building peak bone mass. After peak bone mass is reached, the remodeling balance gradually shifts so that resorption outpaces formation. By mid-adulthood, there is net bone loss because more bone is removed than replaced. That’s why this age range fits best for the statement.