Final answer:
The U.S. Senate has six-year terms, with one-third of the total members up for re-election every two years.
Step-by-step explanation:
The statement that is true about the U.S. Senate is that its members have six-year terms, with one-third of the total members up for re-election every two years. This means that every two years, approximately one-third of the Senate seats are up for election. The members of the Senate serve longer terms compared to the members of the House of Representatives, who have two-year terms and face re-election every four years.
Learn more about The U.S. Senate terms and re-election process