Why does range of motion need to be measured separately for each joint?   a the average ranges of motion of joints are not known. b each joint has a different range of motion. c range of motion can change rapidly in a joint. d none of the above question 6 (1 point) why do women typically tend to have slightly greater stability than men?   a men have more muscle mass in their lower bodies that makes them stiff and less stable. b the increased muscle mass in their upper bodies makes their centers of gravity difficult to find. c women are shorter than men, and shorter people are more stable. d women have lower centers of gravity, and lower centers of gravity provide more stability. question 7 (1 point) one consequence of newton's third law of motion is that   a every object that has mass has inertia b a force acting upon an object increases that objects acceleration c all actions have equal and opposite reactions question 8 (1 point) human movement involves the complex interplay of many body systems.   true false