Question

which statement best describes the factors that affect muscular endurance? a. size of the muscle cells, ability to store fuel, and blood supply to the muscles b. number of muscles, amount of exercise, and type of person c. level of flexibility, amount of exercise, and ability to store fuel d. blood supply to the muscle, type of exercise, and type of muscle cells please select the best answer from the choices provided.

Explanation:

Muscular endurance is affected by the size of muscle cells (larger cells can perform more work over time), ability to store fuel (energy - storage is crucial for sustained activity), and blood supply to muscles (delivers oxygen and nutrients). Other factors in the options like type of person, number of muscles, level of flexibility are not the key factors that directly define muscular endurance.

Answer:

A. size of the muscle cells, ability to store fuel, and blood supply to the muscles