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.
Whether a subject makes decisions primarily on the basis of objective principles and facts or the personal concerns of the people involved in the situation
-are more likely to develop post traumatic stress disorder
While all of the above ingredients are in a cigarette, nicotine is the stimulant that causes addiction and dependency.