What physiological adaptation may help mitigate nitrogen loading effects?

Enhanced acclimatization over time with repeated dives is correct because acclimatization refers to the body’s ability to adapt to changes in its environment, including changes in pressure and the breathing of gases like nitrogen. Repeated exposure to diving can promote physiological adaptations that improve a diver's ability to efficiently manage nitrogen absorption and off-gassing.

As divers accumulate experience, their bodies may become better at handling nitrogen, reducing the risk of narcosis and decompression sickness. Acclimatization also includes various factors like improved oxygen utilization and circulatory adjustments, all of which contribute to the overall effectiveness of managing nitrogen levels.

Increased exercise may improve overall cardiovascular fitness and lung capacity but doesn’t directly influence nitrogen loading like acclimatization does. Reduced dive frequency could limit exposure to nitrogen but does not aid the body in learning to adapt over time. Lower body weight might have some impact on a diver’s buoyancy and oxygen consumption but is not directly related to the mitigation of nitrogen loading effects from diving.