You are presented with the question "Sustained contraction of large muscles in a body leads to what?" and the following answer choices: 
- rapid expansion
 - increased body hair
 - prolactin release
 - recovery time from fatigue
 - increased IRA balance
 - increased pupil dilation
 - increased body strength
 - staying warm

Now knowing that exercise increases a body 's strength and isometric exercise is a sustained contraction of large muscles, such as weight lifting, choose the best answer.


 

       increased body strength  