B. most exercise machines require spotters for safe operation.
Going to the movies, going to the gym, biking etc.
C) nervous system
i think think is the answer
Answer: Sedentary Lifestyle
Explanation:
Osteoporosis is a medical condition that causes bones to become so fragile such that with little activity or stress can cause the bones to fracture without having the ability to create new bones. The primary risk associated with this condition range from age, race, body size, underlying conditions like cancer requiring treatment, lifestyle choices(smoking, sedentary lifestyle, smoking, etc.
For 85-year-old white woman who walks 1 mile (1.6 km) every morning and every evening. and continues to smoke but has cut back to half a pack per day with oophorectomy at age 45 secondary to stage I ovarian cancer. Sedentary lifestyle will not be primary risk factor for osteoporosis for her because she walks i mile every morning and evening, but other primary causes may attribute to her osteoporosis.
