Answer:
A disease model is an animal or cells displaying of the pathological process that are observed in the actual human or animal disease.
Answer
cutting or incision
for example: gastrotomy means a surgical incision to the stomach
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.
The nucleus is responsible for storing dna as well as the instuctions for protein synthesis