The correct way to differentiate inferences from guesses is:
Inferences are based on evidence in the text while guesses are not.
Inferences involve drawing conclusions based on the information provided in the text, using evidence and reasoning to come to an understanding. Guesses, on the other hand, are made without sufficient context or evidence and often lack a rational basis. Thus, inferences rely on the text's content, while guesses may not relate closely to it.