You are presented with the question "For survival, plants require a compound made of what?" and the following answer choices: 
- carbon dioxide
 - Hydrogen and oxygen
 - organic molecules
 - deoxyribonucleic acid
 - carbohydrates
 - Converted sugar
 - genetic material
 - solid, liquid, gas

Now knowing that aplants require water for survival and water is a compound of hydrogen and oxygen, choose the best answer.


 

  Hydrogen and oxygen       