Which of the following is the first step in the BLS sequence of actions?

The first step in the Basic Life Support (BLS) sequence of actions is to check the scene for safety. This is essential because ensuring the safety of both the rescuer and the victim is paramount before providing any assistance. If the environment is dangerous, the rescuer could become a secondary victim, which would hinder effective emergency response.

Assessing the scene allows the rescuer to recognize potential hazards, such as traffic, fire, or electrical hazards, that might pose risks. Once the scene is confirmed to be safe, the rescuer can proceed to assess the victim and initiate further BLS actions, such as calling for emergency medical services and performing chest compressions if necessary. This systematic approach helps ensure that the response is both effective and protects all individuals involved.