Final answer:
Flight attendants typically sit at the jumpseats in an A319 aircraft.
Step-by-step explanation:
The answer to the question 'A319- who sits where at the jumpseats?' is B) Flight attendant. At the jumpseats of an A319, flight attendants are typically seated. The jumpseat is a foldable seat typically located near the front or rear of the aircraft cabin, where flight attendants can sit during takeoff, landing, or turbulence to ensure their safety and be ready to assist passengers if needed.