It would be answer choice number 3 or C (Injured shoulders and upper and lower back)
Explanation:
This would be correct because bending at the waist and picking up large or heavy objects interferes with your spine and your shoulders. Regularly lifting this will give you problems in the future.
When it comes to <em>proper body mechanics</em>, it is important to bend at the knees when lifting a large item. This is done with<em> both feet standing apart, with the other foot a little forward than the other.</em> <u>Bending at the waist will injure the person's shoulders and back</u> 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,<em> his lower back muscles will be torn at some point thereby causing pain.</em>
