Answer:
Both.
Step-by-step explanation:
The U.S. Senate, as well as the House of Representatives, are the two houses of Congress. While the Senate is the upper house, the House of Representatives constitutes the lower house of the United States Congress, the law-making legislature of the nation.
There are three requirements for a person to be a legal and valid member of the two houses. The Senate requires its members to be at least 30 years, U.S. citizens for at least 9 years, and an inhabitant of the state they seek to represent. Likewise, members of the House of Representatives must be at least 25 years old, U.S. citizens for at least the past 7 years, and a legal resident of the state they represent.
Thus, the correct answer is that both members of the Senate, as well as the House of Representatives, must be legal residents of the state they represent.