How many years in total does a Senator serve if they complete two terms?

A Senator serves a term of six years. Therefore, if a Senator completes two full terms, the total length of service would be 6 years multiplied by 2, which equals 12 years. The answer provided, ten years, does not correctly reflect the service duration since two full terms actually amount to twelve years, not ten.

The correct answer should be derived from understanding that each individual term of a Senator is fixed at six years. This is a crucial element of the U.S. legislative system, where Senators are elected to serve staggered terms to ensure continuity in governance. Recognizing this structure helps clarify the importance of understanding the responsibilities and duration of different elected offices.