Why are muscle and fat levels the only factors influencing flexibility impacted by personal decisions? A. Muscle and fat levels are mostly determined by heredity. B. Age, gender, and joint structure cannot be changed. C. Personal decisions have significant impacts on age and gender. D. Flexibility is not dependent upon muscle and fat levels. Please select the best answer from the choices provided. A

B. Age, gender, and joint structure cannot be changed.

Explanation:

The main reason as to why muscle and fat levels the only factors influencing flexibility impacted by personal decisions is because the other factors that influence flexibility are age, gender, and joint structure and these factors are not changeable and therefore does not depend on any sort of decision that you can make to affect those factors.

i think its the first one

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