You are presented with the question "Plants do what during the day but not during the night?" and the following answer choices: 
- synthesize
 - absorb
 - photosynthesize
 - produce light
 - hydrate their cells
 - evaporation
 - plant
 - reproduce

Now knowing that plants release oxygen during the day but not during the night and algae produce oxygen during the day through photosynthesis, choose the best answer.


 

   photosynthesize      