Fact 1: Zinc has a positive impact on the healing of wounds.

Fact 2: And of particular importance to wound healing is the mineral zinc .

Given the two facts above, answer the question "A healing mineral has what impact on wounds?" with the following options: 
- a positive
 - a hurtful
 - an increased
 - the skin
 - support
 - a negative
 - protect them
 - heat energy


 

 a positive        