The correct answer for the given question above would be the second option. If your training program is focused on improving how well your heart and lungs work together to supply oxygen to your body during exercise, then the related factor that you are targeting is cardiovascular efficiency. Cardiovascular efficiency measures how well your circulatory system is able to deliver oxygen to the rest of the body.
Answer:
A. ability to work productively in School
Explanation:
A characteristic of a positive person is their ability to work productively in school.
School is the most important out of sports, video games, and art.
A. making sure to replace lost fluids before, during, and after exercise
