Yes, it is usually around that temperature. Any higher is not normal.
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.
I just finished a worksheet with this question and my text book said it was Chlamydia
I do believe it's all of the above. Although, it might not be trouble sleeping. That might be true in some cases, but not in all.