which factor contributes to the development of osteoporosis?\no genetics\no lack of calcium\no naturally…

Brief Explanations:

Genetics can influence bone - density and structure, and a lack of calcium is crucial as calcium is a major component of bones. Both can contribute to osteoporosis. Naturally occurring exposure is too vague, and ingestion of gluten products is not directly related to osteoporosis development.

Answer:

A. genetics, B. lack of calcium