You are presented with the question "What can cause cool objects to warm up?" and the following answer choices: 
- absorbing sunlight
 - absorbing nutrients
 - absorbing moisture
 - kinetic energy
 - electromagnetic energy
 - absorbing personality
 - energy of moving objects
 - water vapor

Now knowing that absorbing sunlight causes objects to heat and heat transfer always occurs from warm to cool, choose the best answer.


 

 absorbing sunlight        