The quantity of fresh air required for a man is

(a) 1000 cubic feet of air for every 20 minutes

(b) 1000 cubic feet of air for every 20 seconds

(c) 1000 cubic feet of air for every 10 minutes

(d) 1000 cubic feet of air for every 10 seconds

Submitted By: Syed Bilawal Shah (Sain)

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