Who does a member of the House of Representatives represent?

Why this is the answer

A member of the House represents the people of one congressional district. Each state is divided into districts, each district elects one representative, and that representative speaks for everyone who lives inside its lines. USCIS lists four answers that express one idea in slightly different words: citizens in their congressional district, citizens in their district, people from their congressional district, and people in their district. Any of them is correct, and the word "congressional" is optional. The district system gives the House its local character. The people who live in a district are the representative's constituents, the voters he or she must face every two years, and the 2008 study lessons point out that representatives tend to reflect their constituents' views because those who do not may be voted out of office. A senator has to keep the whole state in view; a representative answers to one part of it. Districts are not fixed forever. The House has 435 voting members, and after every census the number of representatives each state should have is recalculated according to population. Each state keeps at least one. With 435 voting members, there are 435 districts spread across the 50 states, and each district's voters elect their representative every two years. A state with a single seat is one district that covers the whole state, so its representative serves the same area as its senators, though the job is still defined as representing a district. The common mix-up is answering "all the people of the state," which belongs to a senator. Some applicants give the name of their own representative, which is a different question on the list. Others answer "Congress" or "the government," which describes where the representative works, not whom he or she serves. Remember the official wording: the House member represents a district.