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In a class practical students work at wrong height but report no pain due to short duration. Why can risk still exist?

Answer and explanation

Correct answer: Repeated wrong posture can increase strain in future

The direct answer is A: repeated wrong posture can increase strain in the future. Ergonomic risk does not begin only when a person reports pain. A poor working height may force the neck, shoulders, back or wrists into an awkward position. Step by step: the wrong height creates an awkward posture; the posture is held during work; if it is repeated, muscles and joints receive repeated or prolonged loading; fatigue and strain may build gradually, even before obvious pain appears. Option A is correct because absence of immediate symptoms does not prove absence of risk. Option B is false: a short duration may reduce exposure, but it does not make wrong posture always safe. Option C is false because students still use their bodies while standing, sitting, reaching and handling materials. Option D is false because work-surface height strongly affects posture and force. Exam cue: risk is a possibility; pain is only one possible later symptom.

Related tags

Class PracticalWrong HeightFuture Strain

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