To add aerobic exercise to her workout routine, kickboxing would be the most appropriate choice. Kickboxing is a form of cardiovascular exercise that increases heart rate and enhances endurance, making it an effective aerobic workout.
Weightlifting primarily focuses on strength training, while sprinting is more anaerobic, involving short bursts of high-intensity activity. "Jump open" is not a standard term related to aerobic exercise, so it's not applicable. Therefore, kickboxing is the best option for aerobic exercise.