Verified Answer :

Hagrid

The answer is C. Oxygen.
Oxygen is the most important gas that living things need to be able to survive especially human. Thus absence of oxygen is absence of life as well.
Plants and animals also needs oxygen to be able to live.

mesillyroblox

Answer:

It is C. oxygen

I took ta test (fr no lies, dont trust other people if they dont show a picture and say they took a test, trust me)

Explanation:

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