The clause that best completes the sentence to create a pun is:
A) We finally got the ball rolling.
To create a pun, we would want to choose an option that plays with words or uses wordplay. In this case, the phrase "got the ball rolling" in option A is a pun because it combines the literal meaning of starting a game of bowling with the figurative meaning of beginning an activity or process. So the best clause to complete the sentence with a pun would be option A: "We finally got the ball rolling."
