When changing rescuers during artificial respiration, this should be done:

The correct answer focuses on the importance of maintaining a continuous and effective rhythm of artificial respiration during the transition between rescuers. When performing artificial respiration, it's critical to ensure that there is no interruption in the delivery of breaths. Disruption in the rhythm can lead to inadequate ventilation, which may decrease the effectiveness of the rescue effort.

Maintaining the rhythm allows for a consistent supply of oxygen to the victim and helps avoid any potential complications that could arise from pauses. Training emphasizes the need for seamless transitions between rescuers to ensure that the overall process remains efficient and uninterrupted, which is vital in emergency situations where every second counts.