Final answer:
Strength training programs aim to increase muscular strength, size, and endurance, and can also improve speed, but not necessarily increase the chance of injury, which is the correct answer to the question.
Step-by-step explanation:
Strength training programs are designed to increase muscular strength and muscular size (hypertrophy). The process of hypertrophy involves the addition of structural proteins to muscle fibers, increasing their diameter. Strength training can also improve overall muscular endurance and speed. However, contrary to popular belief, a well-designed strength training program should not inherently increase the chance of injury. In fact, by increasing the development of connective tissue and strengthening tendons, strength training often helps to prevent injury. Therefore, the correct answer to the question is C. Increase the chance of injury, as this is not an expected outcome of strength training programs.