Question

identify the chemical compound.
h₂o
h₂
o₂
c

Explanation:

A chemical compound is a substance composed of two or more different elements chemically bonded together. $H_2O$ (water) consists of hydrogen and oxygen atoms bonded, so it's a compound. $H_2$ (hydrogen gas), $O_2$ (oxygen gas) are diatomic molecules of single elements, and $C$ (carbon) is an element, not compounds.

Answer:

A. $H_2O$