To most accurately achieve the goal of adding anaerobic exercises to her training routine, Karolina should add weightlifting.
Anaerobic exercises are high-intensity activities performed in short bursts, which primarily rely on energy sources stored in the muscles and do not require oxygen for fuel. Weightlifting fits this definition as it involves short, intense efforts. In contrast, jogging, playing basketball, and swimming tend to be more aerobic, focusing on sustained efforts over a longer period of time.