Correct Response: A. Improving muscle definition and tone begins with strengthening muscles. Muscle strength is the central component of a toned muscle, and using either a moderate degree of resistance and high number of repetitions or heavier resistance with fewer repetitions will increase muscle strength. The key to making tone and definition visible is body composition. Muscle definition and tone are more visible with a more lean body composition. While static and dynamic stretching, (B) and (D), are important components of health-related fitness, they promote joint and muscular flexibility. Although training with heavy weights and few repetitions (C) improves muscular strength, it is less likely than (A) to improve overall definition and tone.
