You are presented with the question "What can muscle spasms cause?" and the following answer choices: 
- massive damage
 - matter vibrating
 - constriction
 - friction
 - Dehydration
 - ketosis
 - stretching
 - photosynthesis

Now knowing that constriction occurs when the muscular walls of blood vessels contract and muscle spasms are involuntary contractions of a muscle, choose the best answer.


 

   constriction      