Everyone sitting in the waiting room of the school’s athletic office

E is the right answer.



The best way to answer this question is by a process of elimination.


This cannot be correctly inferred from the statements above. We can correctly infer that none of the people sitting in the waiting room of the school's athletic office at nine o'clock is an accomplished player. The fact that a person has registered for a beginner's course does not mean that the person has never played tennis before.


We can infer that anyone who sat in the waiting room of the school's athletic office registered for a beginner's tennis clinic. But we cannot infer that they registered only for beginner's tennis clinic. Whether they registered for another clinic cannot be determined. B is therefore incorrect.


That John, Mary, and Teresa sat in the waiting area only tells us that they registered for the beginner's clinic. We cannot correctly infer that they are the only people who registered for the beginner's tennis clinic. C is thus wrong.


The fact that we are informed that John, Mary, and Teresa were sitting in the waiting room of the school's athletic office does not mean they are the only people sitting in the waiting room. There could be others or they were the only people there, we can't tell. D is incorrect.


Correct. We know that no accomplished tennis player would register for a beginner's tennis clinic. And since we can infer that John and Teresa registered for the clinic because they sat in the waiting area of based on the information above, we can conclude that neither John nor Teresa is an accomplished tennis player.