You are presented with the question "What occurs when the tension of cell walls are eased?" and the following answer choices: 
- Sleep
 - exercise
 - friction
 - Exfoliation
 - recovery
 - dilation
 - sweating
 - murmur

Now knowing that dilation occurs when cell walls relax and relaxation promotes relaxation and easing of tension, choose the best answer.


 

      dilation   