Greg is a sophomore university student and has been working on his part of a major group presentation for one of his classes. By the time he emailed his section to his group, he is pretty sure he his coming down with the flu that has been going around campus. The next morning, he has a fever of over 100, a headache, and a sore throat. Greg is supposed to give his presentation that day, and needs to decide if he should go. His professor has a very strict policy for presentations, and Greg needs a good grade in the class. However, he is worried that he might make other students in his class sick. What should he do?