In a two-rescuer scenario, what is one advantage of using a bag-valve mask?

One significant advantage of using a bag-valve mask in a two-rescuer scenario is that it allows for quicker ventilation. This is because the two rescuers can work together efficiently: one can maintain an open airway while the other uses the bag-valve mask to deliver breaths. This coordination often leads to a more effective and timely administration of ventilation, which is crucial in emergencies where every second counts. Quick and effective ventilation can improve oxygenation and help support the patient until further medical assistance is available.

In contrast, other options suggest advantages that do not accurately reflect the functionality of a bag-valve mask. For example, while it is indeed lightweight and portable, this is not the primary advantage in the context of a two-rescuer scenario, where the emphasis is on effective ventilation. Additionally, using a bag-valve mask is not more effective with just one rescuer, as teamwork enhances the success of the procedure, and it does not function better without oxygen; rather, it typically works best when supplemental oxygen is utilized.