Check all that apply: functions of the skeletal system a. stores
b. protects
c. supports
d. moves
e. produces blood cells
f. provides are for muscle attachment

a, b, c (this one is debatable), d, e, f

The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals. The skeletal system is also called the musculoskeletal system

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.