Question

which of the following are safe methods for lifting heavy objects? (select two.)
pull up with your arms
bend at the waist
bend your knees and keep your back straight
lift with your legs
use a lifting strap around the object and your neck
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Explanation:

To determine safe heavy - lifting methods, we rely on ergonomic principles. Pulling up with arms (incorrect, as arms lack strength for heavy loads and can cause injury), bending at the waist (incorrect, puts strain on back), bending knees and keeping back straight (correct, uses leg strength and protects back), lifting with legs (correct, legs are stronger for lifting), using a lifting strap around neck (incorrect, can harm neck/spine).

Answer:

C. Bend your knees and keep your back straight
D. Lift with your legs