What would be good GMAT inferences? Well, what must be true? She can't like vanilla ice cream better than she likes chocolate ice cream-if chocolate is her favorite flavor of ice cream, then by definition she doesn't like any other flavor better. She has to have tried at least one other flavor of ice cream at some point in her life- she has to have had the ability to compare with at least one other flavor in order to decide the chocolate is her favorite flavor. These kinds of inferences would be correct answers on the GMAT.