Discussion
Assertion (A) : Standing in a static posture is fatiguing.
Reason (R) : Blood circulation is affected in the extremities while standing for work.
Codes :
Answer: C
Both statements are true, but (R) is not the complete explanation. Standing in a static posture is fatiguing, as the muscles are held in contraction. Blood circulation to the extremities, especially the legs, is affected during standing, because blood pools there and returns to the heart slowly.
Poor circulation is one cause of the fatigue, but not the whole of it, because muscle strain and the load on the spine and joints also contribute. So the correct choice is the one saying both are true, but (R) is not the complete explanation.
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