If Roman says that the risk of osteoporosis can be reduced by making certain lifestyle choices, then the lifestyle choice that Roman is most likely referring to is increasing calcium intake. If calcium intake is increased and physical activity outside is also undertaken then levels of Vitamin D being stored by the liver will also increase. Vitamin D levels are a direct indicator of an individual's risk of osteoporosis or osteomalacia.
Answer:
I'm not confident in my answer, but I beleive it is the first choice
Mostly because sometimes the people are doing something just because of the impulse and they would not think it over therefore making poor choices <span />