Every water molecule has two hydrogen atoms bonded to one oxygen atom this fact supports the concept that elements in a compund are

This fact supports the concept that elements in a compound are... -Chemically combined in a fixed proportion

Chemically combined in a fixed proportion.

Explanation:

The fact that every water molecule has two hydrogen and one oxygen atoms depicts the fact that its a chemical compound having a fixed proportion. Compounds maybe formed by combining atoms of their constituent elements by ionic or covalent bond. In our case water has covalent bond between hydrogen and oxygen atom.

Answer is (d)a brainliest would be appreciated

Answer two atoms of oxygen;