Which type of exercise primarily focuses on flexibility?

The correct choice is yoga, as it is specifically designed to enhance flexibility through a series of postures and stretches that target various muscle groups. Yoga incorporates movements that lengthen the muscles and improve the range of motion in the joints. This practice also emphasizes controlled breathing and relaxation, which can contribute to a greater sense of body awareness and improved flexibility over time.

While cardiovascular exercise, weight training, and sprinting can all contribute to overall fitness and may involve some elements of stretching, their primary goals differ. Cardiovascular exercise focuses on increasing heart rate and improving cardiovascular health, weight training is centered around building strength and muscle mass, and sprinting involves quick bursts of speed that rely on strength and power rather than flexibility. Therefore, yoga stands out as the exercise type that specifically targets and promotes flexibility.