Osteoporosis is most likely to be affected by which cycle

The correct answer is - phosphorus cycle.

Explanation:

Osteoporosis is the bone disease that makes bone week by losing most of the bone or formed too little which causes easily breaking of the bones. The remodeling of the bones is responsible for this which involves calcium and phosphorus.

Phosphorous is the mineral that is also important for bone formation and in the organism its essential in being in the correct amount which is affected by the phosphorus cycle.