Answer: A) Instead of horses pulling carriages full of people, people pull carriages full of horses.
Explanation: an irony is a state of affairs or an event that seems contrary to what one expects and it often has an amusing result. A situational irony is when what happens is the contrary to what the characters or the audience are expecting to happen. From the given options, the sentence that describes an example of situational irony in Gulliver's Travels, is the corresponding to option A, because it is the contrary of what one would expect.
C is the answer some may say otherwise but the key word(s) that make it an opinion to be argued are; inadequate. That word is a big red flag showing its an opinion. not all people think Rhodes so called small gestures are inadequate.