Why are holes made on hanging banners and hoardings? Pick the most appropriate answer from the following options.

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Holes allow the banners to stay in position

Holes add to the appearance

Holes reduce the air pressure

Holes reduce the tendency to fly

answer is D.

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Detailed Solution

Air exerts pressure in all directions, the pressure exerted by wind may tear the hoardings and banners if they do not have holes. Holes reduce the air pressure and allow the air to pass through them.

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