False A.) Women are shorter than men, and shorter people are more stable... there are taller women, not every woman is short, not every man is tall
False B.) Men have more muscle mass in their lower bodies that makes them stiff and less stable... NOT true AT ALL... not every man has more muscle mass in lower body than upper...
True C.) Women have lower centers of gravity, and lower centers of gravity provide more stability
False D.) The increased muscle mass in their upper bodies makes their centers of gravity difficult to find... This can be applied to men NOT women.
You have to do your own goal
Probably the last one. It's the least realistic way to make your body healthy. If you are going to do exercise and make yourself healthy, friends would be helpful in that process and exercising is definitely a good way to be healthy.
To say no and if possible avoid those people or leave