I'm not sure which to pick?

What is the term limit for senators? Two terms=not correct
Four terms= not correct
Six terms=?
There are no term limits=?
Iknow its not the first two but in my text material it says every 6 years but then again it also says senators can be reelected indefinitely!
When I looked it up on the internet it said 6year term indefinitely!

Each term for Senators is 6 years. They can be reelected over and over -- indefinitely.

The term limit for senators in the United States is not limited to a specific number of terms. According to the U.S. Constitution, senators serve six-year terms. This means that they are elected to serve for six years, and after that term, they can seek re-election indefinitely. Unlike the President, who is limited to serving two terms, there is no constitutional restriction on the number of times a senator can be re-elected. So, your understanding that the term limit for senators is every six years is correct. They can serve for multiple terms as long as they continue to win re-election.