Which option is not a correct use of ergonomics?

Correct answer: Keeping important tools outside the worker's reach

Ergonomics means designing work, tools, furniture, and surroundings so that they suit the worker and reduce strain. Frequently used tools should be easy to reach, the chair should support the body and be adjustable, lighting should be sufficient, and the work surface should have a suitable height. These arrangements can reduce unnecessary movement, tiredness, awkward posture, and the chance of injury while improving comfort and efficiency.

Option A is the incorrect use because keeping essential tools outside the worker’s reach forces repeated stretching, bending, or walking. That wastes time and may increase fatigue or injury risk. Options B, C, and D are proper ergonomic practices: an adjustable chair supports different users, adequate light helps prevent eye strain, and correct work height supports a safer posture. Therefore, A is the answer.