Which is the best description of what can happen if someone in the workplace regularly picks up a large item by bending at the waist, and then puts it on a shelf high above their head?
O injured leg, hand, or foot
O increase in flexibility of the waist
increase in flexibility of the legs
O injured shoulders and upper and lower back

injured shoulders and upper and lower back

Explanation:

When it comes to proper body mechanics, it is important to bend at the knees when lifting a large item. This is done with both feet standing apart, with the other foot a little forward than the other. Bending at the waist will injure the person's shoulders and back because this uses the muscles of the back instead of the muscles of the arms and legs. If the person in the workplace does this often, his lower back muscles will be torn at some point thereby causing pain.

answer(b) keep oxygenated and deoxygenated blood separate;

perspiration and respiration.