What does Gulliver often critique in his travels?

Gulliver frequently critiques political corruption and human flaws throughout his travels, utilizing satire to highlight the shortcomings of various societies. In each of the different lands he visits, such as Lilliput, Brobdingnag, or the floating island of Laputa, he observes and comments on the imperfections in governance, social structures, and human behavior.

For example, in Lilliput, he satirizes the absurdity of the political conflicts fueled by trivial differences and the self-serving nature of politicians. Meanwhile, in Brobdingnag, the King’s disdain for European politics reflects a critique of the moral failings of leaders. This consistent focus on political and human flaws underscores Swift's broader philosophical viewpoints about humanity, emphasizing themes of power, pride, and the folly of mankind.

The other options, while relevant to various aspects of the book, do not capture the primary focus of Gulliver's critiques as robustly as the examination of political corruption and human flaws does.