Which of the following is an interrogative sentence?

An interrogative sentence is one that asks a question and often begins with words like who, what, where, when, why, or how. It typically requires a response and ends with a question mark.

The option that correctly exemplifies this is the sentence that asks, "Where are you going?" This sentence is clearly seeking information, thereby classifying it as interrogative. It prompts a response about someone's destination, which aligns with the purpose of interrogative sentences in English.

The other sentences provided are declarative statements that convey facts or opinions rather than asking questions. They all make statements about situations or actions but do not invite a response, which is characteristic of interrogative sentences. Understanding these distinctions can help identify different sentence types and their functions in communication.