6. These members of congress preside over districts in the United States, They also serve two year terms and must be 25 or older to qualify for this position. Answer:

The question is asking about a specific position in the United States Congress. The clues given are that these members preside over districts in the United States, serve two-year terms, and must be 25 or older to qualify for this position. These clues point to the position of a U.S. Representative in the House of Representatives. U.S. Representatives are elected to two-year terms and must be at least 25 years old. They represent congressional districts, which are smaller geographic areas within each state.