Question

which of the following is a component of the proper technique for lifting heavy materials? hold the materials away from the body raise the materials to shoulder height bend the knees bend at the waist

Explanation:

When lifting heavy materials, bending the knees helps keep the back straight and reduces the risk of back - related injuries. Holding materials away from the body increases the strain on the back. Raising materials to shoulder height can be dangerous without proper support. Bending at the waist puts excessive stress on the lower back.

Answer:

C. bend the knees