Answer:
a. neither have term limits
Step-by-step explanation:
The only similarity list here is that neither have term limits. A member of Congress is only limited in the length of his/her job by their ability to win reelection, their decision to retire from Congress, or by being removed from office because of violating the law. The same is true of a Supreme Court Justice, with the exception of reelection: Justices are not elected, but nominated by the President and confirmed by the Senate.