Which of the following indicates that a stretching program is appropriate for a bodybuilder?

In a stretching program, improved range of motion is a key indicator that the program is appropriate for a bodybuilder. An effective stretching regimen enhances flexibility, which can lead to better performance during workouts and increase overall muscle function. When bodybuilders can move their joints through a greater range of motion, they can perform exercises more effectively and safely, potentially leading to better muscle development and injury prevention.

Post stretching soreness can occur, but it is not necessarily an indicator of an effective stretching program. While some soreness might indicate that the muscles have been worked, it does not mean that the stretching has improved flexibility or functionality. Increased muscle bulk relates more to strength training and hypertrophy, which are not directly tied to stretching. Lastly, decreased workout duration isn't a suitable measure of the effectiveness of stretching; in fact, effective stretching could take additional time within a workout routine to ensure proper execution and benefits.