How long is the time limit to complete the 15,000m bike event?

The correct answer is based on the specifics of the Army Combat Fitness Test protocols concerning the 15,000-meter bike event. For this particular event, a soldier is allotted a maximum time of 25 minutes to complete the distance. This time limit is designed to test both the cardiovascular endurance and the leg strength of participants, reflecting the physical demands expected of soldiers in the field.

While the other options propose different time limits, they do not align with the official guidelines. The 25-minute limit ensures that participants are pushing themselves physically while still allowing for a reasonable completion time that balances endurance and speed. This time frame is crucial for assessing soldiers' capabilities effectively and ensuring they meet the fitness standards set by the Army.