What major concern do the Houyhnhnms have regarding Gulliver?

The major concern that the Houyhnhnms have regarding Gulliver is indeed centered on his origins and true nature. Throughout the narrative, they are depicted as highly rational and noble beings who prioritize reason and morality. When Gulliver arrives in their land, they are puzzled by his humanity and the complexity of his behavior, as it stands in stark contrast to their own ideals.

They observe that Gulliver, unlike them, is a product of a flawed species that is capable of both reason and base instincts, which leads them to question what he represents and where he fits into their understanding of the world. This concern is pivotal because it highlights the differences between the civilized nature of the Houyhnhnms and the often chaotic and morally ambiguous nature of human beings. Consequently, this exploration of Gulliver's origins allows for deeper reflection on human society and its flaws as seen through the lens of the Houyhnhnms' rational perspective.

In contrast, while the other options touch on aspects that could be concerns (like his size, the way he communicates, or his intentions), they are not the primary focus of the Houyhnhnms' apprehension. Their sophisticated worldview leads them to a deeper inquiry about the essence of Gulliver as