The correct answer is Focuses energy. Eustress is defined as being beneficial to the one experiencing it. Such as being stressed out because your school final for a class is due soon, and you need to continue to work on it in order to pass.
There are many websites you can visit however, the following link is a good one. https://www.cancer.gov/about-cancer/understanding/what-is-cancer
Answer:
B. Estimated Average Requirements