Which of the following best describes static stretching?

Static stretching is characterized by holding a stretch position for a predetermined duration, typically ranging from 15 to 60 seconds. This form of stretching allows the muscle to gradually lengthen and can enhance flexibility over time. By maintaining the stretch, individuals can increase blood flow to the muscles, improve joint mobility, and reduce tension.

The other options emphasize different stretching techniques or approaches. For instance, bouncing during a stretch is associated with dynamic stretching, which can increase the risk of injury. Requiring a partner to assist suggests a form of assisted stretching or partner stretching, which is not inherent to static stretching. Focusing on rapid movement relates more to ballistic stretching or dynamic warm-ups, which involve movement rather than holding a static position. Thus, the essential aspect of static stretching is the sustained hold, which promotes relaxation and flexibility.