Respuesta :

artsykhathy
A. Hydrogen and oxygen are classified as elements.

Explanation: they are from the periodic table (which is a table of elements) and it wouldn’t make sense for them to be minerals, energy or organisms. They aren’t living things.
Lekymber123
The answer would be energy!

I hope this helped! Mark me Brainliest! :) -Raven❤️