Fact 1: Absorbing sunlight causes objects to heat.

Fact 2: Heat transfer always occurs from warm to cool.

Given the two facts above, answer the question "What can cause cool objects to warm up?" with the following options: 
- absorbing sunlight
 - absorbing nutrients
 - absorbing moisture
 - kinetic energy
 - electromagnetic energy
 - absorbing personality
 - energy of moving objects
 - water vapor


 

 absorbing sunlight        