Nucleation, Mechanics, And time
Answer:
1. chemical to light
2. sunlight to chemical
3. wind to mechanical
4. chemical to light and heat
Explanation:
1. Growth
2. Tumor
3. Body
B. Being new to the country, it is safer for Sarah to take precautions until she gets acclimated
I believe this is the answer as the other answers take too many assumptions as the question doesn't explicitely state that Sarah has skin problems.