Question

Joey lifts a heavy backpack off the ground. As he lifts the backpack, he keeps his legs straight, and uses his biceps and back muscles to lift. In your analysis of Joey's form you conclude he needs to use his...

A. Arms and muscles to keep his head up
B. Back muscles and keep his feet together
C. Chest muscles and bend more at the hips
D. Leg muscles to keep his back straight

Answer 1

D is the answer because keeping your legs and your back both straight allows for leverage where as the other choices were close but not exactly what would give him the most success.

Answer 2

D

Step-by-step explanation:

The current explanation describes Joey bending his back which can cause numerous injuries and strains when lifting a heavy object. The proper way would be to bend the legs and keep his back straight.