Joe is lifting boxes to load a trailer.To follow proper lifting procedures, Joe should: Select the 3 answer options that apply. Bend at the knees D Bend at the waist Keep his back straight

## Step 1<br />This problem is about the correct lifting procedures that Joe should follow while lifting boxes to load a trailer. The options provided are:<br />- Bend at the knees<br />- Bend at the waist<br />- Keep his back straight<br /><br />## Step 2<br />The correct lifting procedures are:<br />- Bend at the knees: This is the correct procedure because it allows the use of the strong muscles of the legs and keeps the back straight.<br />- Keep his back straight: This is also a correct procedure because it helps to prevent injury to the back.<br />- Bend at the waist: This is not a correct procedure because it can lead to injury to the back.