How long should direct pressure be held until the bleeding stops?

The appropriate duration for holding direct pressure on a bleeding wound is at least five minutes or longer, which is why this choice is the best answer. Maintaining consistent direct pressure is critical to effectively control bleeding by allowing the blood to clot and stop flowing from the wound.

After five minutes of sustained pressure, if the bleeding has not stopped, this indicates that further evaluation and possibly additional medical assistance may be required. Continuous pressure not only helps in clot formation but also prevents the wound from being disturbed, which could resume bleeding.

The other durations provided would not typically allow sufficient time for the body’s natural clotting mechanisms to take effect. Short bursts of pressure or holding pressure for too brief a period may not effectively control the bleeding, and an "indeterminate amount of time" does not provide a clear guideline for when to seek further help or intervention. Therefore, maintaining direct pressure for at least five minutes or longer is essential for effective first aid in managing bleeding.