Final answer:
Actonel, a drug used to treat osteoporosis, works by decreasing the activity of osteoclasts, which are bone cells that release calcium by breaking down bone matrix.
Step-by-step explanation:
The correct answer is C. decreasing the activity of osteoclasts. Actonel, a drug used to treat osteoporosis, works by inhibiting the activity of osteoclasts, which are bone cells that release calcium into the circulation by breaking down bone matrix. By decreasing the activity of osteoclasts, Actonel helps to prevent further bone loss and strengthen bones.
For example, Actonel binds to the surface of osteoclasts, inhibiting their ability to break down bone. This increases bone density and reduces the risk of fractures in individuals with osteoporosis.
Therefore, option C, decreasing the activity of osteoclasts, is the correct mechanism of action for Actonel.