of the function is missing. return jsonify(results) @app.route("/api/v1.o/passengers") def passengers(): ""Return a list of passenger data including the name, age, and sex of each passenger" " \# Query all passengers session = Session(engine) results = session.query(Passenger.name, Passenger.age, Passenger.sex).all() \# Create a dictionary from the row data and append to a list of all_passengers all_passengers = [] for name, age, sex in results: passenger_dict = \{\} passenger_dict["name"] = name passenger_dict["age"] = age passenger_dict["sex"] = sex all_passengers.append(passenger_dict) \#\#\# Return list of all passenger data in Json format \#\#\# if name == '_main_: app.run(debug=True) On line 52, what line of code needs to be inserted so that the list of all passenger data will be sent to the end-point in JSON format? return all_passengers.json() return json(all_passengers) return jsonify(all_passengers) return all_passengers