Dynamic stretches are preferable to static stretches before athletic competitions because dynamic stretching does not seem to have a negative effect on an individual's strength and power.

Which of the following defines scoliosis? a. a posture disorder characterized by the shoulders being rounded and the back hunched b. a posture disorder in which the spine curves up the back like a snake c. a posture disorder characterized by excessive curvature or arch in the lower back d. none of the above