Final answer:
The correct spelling is osteoporosis (Option B).
Step-by-step explanation:
Osteoporosis is a condition where bones become weak and brittle, primarily due to an imbalance in the activity of bone-forming cells (osteoblasts) and bone-resorbing cells (osteoclasts). This imbalance leads to reduced bone mass and an increased risk of fractures.
To design a therapeutic drug for the treatment of osteoporosis, one would target specific bone cell types to restore the balance between bone resorption and bone formation. Drugs could be designed to either stimulate the activity of osteoblasts, thereby increasing bone formation, or inhibit the activity of osteoclasts to reduce bone resorption. An effective treatment would aim to restore bone density and reduce the susceptibility of bones to fracture, thereby mitigating the likelihood of osteoporotic fractures.
Osteoporosis is an age-related disorder and the most common cause of broken bones in the elderly. It is different from Paget's disease, which is characterized by haphazard new bone formation. Osteoporosis is diagnosed based on bone density scans, and its risk factors include aging, hormonal imbalances, certain medications, and lifestyle choices.
Thus, the term that is spelled correctly is b. osteoporosis.