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

Fact 2: Wound healing Wound healing is a critical aspect of surgery.

Given the two facts above, answer the question "zinc has a positive impact after what" with the following options: 
- surgery
 - leukemia
 - Cooking
 - cycles
 - cancer
 - disease
 - exercise
 - the skin


 

 surgery        