How often are U.S. senators elected?(1 point)

Responses

About one-third of the Senate is elected every six years.
About one-third of the Senate is elected every six years.

About one-third of the Senate is elected every two years.
About one-third of the Senate is elected every two years.

About one-third of the Senate is elected whenever the president decides it is the right time.
About one-third of the Senate is elected whenever the president decides it is the right time.

About one-third of the Senate is elected every four years.
About one-third of the Senate is elected every four years.

About one-third of the Senate is elected every two years.