You are presented with the question "what is released by energy conversion?" and the following answer choices: 
- photons
 - waves
 - A drug.
 - Light
 - oxygen
 - heat
 - water
 - energy

Now knowing that photosynthesis means producers convert from carbon dioxide, water, and solar energy into carbohydrates for themselves and water is released by the processes of photosynthesis and respiration, choose the best answer.


 

       water  