Why is it necessary for combat lifesavers to practice their skills regularly?

Regular practice of skills is crucial for combat lifesavers as it ensures that they maintain proficiency and are ready for real-life application when they encounter medical emergencies in the field. Skill degradation can occur over time if these techniques are not practiced, which can hinder a lifesaver's effectiveness when it truly counts.

Training in high-stress situations, common in combat, also reinforces muscle memory and decision-making capabilities, helping the lifesaver to respond quickly and appropriately. In emergency scenarios, delays or hesitations can be detrimental, so continuous practice is essential to ensure that lifesavers can perform under pressure.

The other choices do not emphasize the practical and readiness aspects that are fundamental to the role of a combat lifesaver. Competing with other lifesavers or merely meeting training requirements does not contribute to the necessary skills and confidence needed for actual crises, nor does developing new medical techniques align with the primary goal of maintaining established lifesaving skills.