ANSWER -
The power that Jose can use with his coaches to showcase his improvement is the power of effective communication. By being proactive and communicating his progress to his coaches, Jose can increase his chances of making the varsity team. For example, he could approach his coaches before or after practice and say something like "Coach, I've been working really hard over the summer to improve my skills, and I wanted to show you how much progress I've made. Would you mind watching me during batting practice and giving me some feedback?" By taking the initiative to communicate his efforts and progress, Jose can demonstrate his commitment to the team and his desire to improve, which will likely impress his coaches.