The correct answer would be option A, Ergonomics.
Repetitive motions, heavy lifting and prolonged awkward postures are all Ergonomics Hazards.
Explanation:
Ergonomics Hazards are basically concerned with the Physical Factors. These factors harms the musculoskeletal system.
Ergonomic Hazards include the following:
These are all the ergonomic hazards which directly affect a person's efficiency.
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