Answer:
Water
Explanation:
This is actually a chemistry question but I'll answer it anyways
The definition of a chemical compound is " a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds. "
Compounds are homogenous, which means that they are evenly distributed and have 2 or more different elements from the definition
Therefore the answer is that water is a compound as its chemical make up is H2O.
Gold is made up of 1 element
Oxygen is made up of 1 element,
Hydrogen is made up of 1 element
Therefore these options are not viable since they do not contain 2 or more elements.