You are presented with the question "An object can be seen if it reflects what?" and the following answer choices: 
- Energy.
 - vibrations
 - energy
 - waves
 - sound
 - sun's heat
 - photons
 - sunlight

Now knowing that if an object reflects light toward the eye then that object can be seen and light is made of photons , choose the best answer.


 

       photons  