You are presented with the question "What sort of molecules are used for absorbing light energy by plants?" and the following answer choices: 
- tiny
 - cellulose
 - photons
 - unique
 - messengers
 - chemicals
 - complex
 - similar

Now knowing that chlorophyll is used for absorbing light energy by plants and chlorophyll is a complex molecule, choose the best answer.


 

       complex  