What is the first thing you need to do if someone is on fire?

Roll over the ground as fast as possible and cover the person as soon as possible.

Explanation:

When you run, the body on fire catches oxygen which stimulates a combustion reaction hence causing the fire to grow bigger.

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specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

plz give brainliest

2b2t

explanation:

2b2t