Question

Which of the following represents a compound?
A) H
B) H-3
C)H2O
D) O-16

Answer 1

C, H2O represents the compound responsible for constituting water.

Answer 2

The answer is C. H2

To be considered as a compound, it need to contain two on more elements.
From the option above, only H2O contains 2 elements, H is for Hydrogen and O is for oxygen. This compound formed a substance that we most commonly know as water.