Ventilators are provided at the top of room:

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An Intiative by Sri Chaitanya

to bring oxygen for breathing

so that sunlight may enter the room

to maintain convection currents to keep the air fresh in the room

to provide an outlet for carbon dioxide

answer is C.

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Detailed Solution

To send hot air out of the room as it reaches to top of the room being lighter ,ventilators are provided.

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