You are presented with the question "What will happen if an object is in the sunlight?" and the following answer choices: 
- Grow old
 - Get dirty
 - photons
 - It expands
 - warmth
 - motion
 - Heat up
 - Cool down

Now knowing that if an object is in the sunlight then that object will absorb solar energy and solar energy heats surface, choose the best answer.


 

       Heat up  