Final answer:
The PACER test (Progressive Aerobic Cardiovascular Endurance Run) is widely used to assess the cardiorespiratory fitness of children 5 to 17 years of age.
Step-by-step explanation:
The field test that is widely used to assess the cardiorespiratory fitness of children 5 to 17 years of age is the PACER test (Progressive Aerobic Cardiovascular Endurance Run). The PACER test involves running back and forth between two points at an increasing pace. This test measures a student's aerobic capacity and is often used in school physical education programs to assess cardiovascular fitness.