What symptoms should be assessed in the breathing step of the ABCs?

In the breathing step of the ABCs (Airway, Breathing, Circulation), the primary focus is on assessing the effectiveness of a person's breathing. Therefore, observing chest movement plays a crucial role, as it helps determine whether the person is actually breathing and if the breathing is adequate. Additionally, listening for any abnormal sounds, such as wheezing or stridor, provides insights into potential airway obstructions or respiratory distress. This assessment is vital for identifying any immediate threats to life that may require intervention.

The other options focus on aspects that are not specific to assessing breathing. Measuring heart rate relates to circulation, assessing temperature pertains to overall condition and can indicate infection or other issues, and checking for responsiveness is part of the initial assessment but does not directly evaluate the breathing status. The primary concern during the breathing step is to ensure that air is moving in and out of the lungs effectively and safely.