Answer:The answer is definatly not D, mainly for the reason that Acceleration is moving forward and adding speed. That said best option would be (B) a car traveling south with its cruise control set.
Explanation:The Cruise control will continue the Vehical speed that it is set to. The bus would work but it is traveling north at 25m/s or Meters Per second which usually with speed and move ment of vehicals it goes by Miles per hour. I Hope it is correct and this helps. Good luck :)