Final answer:
Soldier's heart rates must be below 150 bpm to go to the floor after the cardiovascular component.
Step-by-step explanation:
To go to the floor after the cardiovascular component, Soldier's heart rates must be below 150 bpm (Option d). In healthy young individuals, heart rate may increase to 150 bpm during exercise. It is important to note that maximum heart rates vary depending on factors such as age and individual fitness levels.