In the breaststroke development, what is the significance of the "pop balloon" kick?

The "pop balloon" kick is significant in the development of the breaststroke because it prepares the body for gliding. This kick involves a specific motion where the legs drive downward and outward before snapping back together, mimicking the act of popping a balloon. This action contributes to an effective glide phase in the stroke, allowing swimmers to maximize their distance per stroke while minimizing resistance in the water. By focusing on this kicking technique, swimmers can enhance their buoyancy and streamline their body position, which is crucial for efficient swimming in the breaststroke.

The other options, while they may touch upon aspects of the stroke, do not capture the primary function of the "pop balloon" kick in relation to the gliding action which is essential for optimal performance in the breaststroke.