You are presented with the question "What kind of impact does zinc have on healing cuts?" and the following answer choices: 
- heat energy
 - lowered energy cost
 - no impact
 - major threat to health
 - it causes infection
 - a positive impact
 - circulatory systems
 - a negative impact

Now knowing that zinc has a positive impact on the healing of wounds and an incised wound is a clean cut, choose the best answer.


 

      a positive impact   