Final answer:
Gulliver felt he could no longer deny he was a real Yahoo for several reasons, including his thoughts and actions being similar to theirs.
Step-by-step explanation:
Gulliver felt he could no longer deny he was a real Yahoo because his thoughts and actions were similar to theirs. Although the provided text does not directly answer the student's question, we can infer from Gulliver's travels and experiences that he sees the Yahoos as a reflection of his own society's vices and ultimately cannot separate himself from them. It is the similarities in behavior and the flawed nature of humanity that lead Gulliver to this realization, rather than a preference for food, company, or a response to attraction.