Correct option is C
In basic life support (BLS) and emergency response protocols, the first step when encountering a collapsed individual is to check for responsiveness. This helps determine whether the person is conscious or unconscious, and guides the next steps (shout for help, assess airway and breathing). Immediate responsiveness check ensures that no time is lost and that appropriate care follows rapidly.
Explanation for each option: (a) call for help – emergency number: Incorrect. This step is important but comes after checking if the person is responsive or not. (b) open airway: Incorrect. Airway management comes after confirming unresponsiveness and calling for help. (c) check for responsiveness: Correct. This is the first step in the BLS algorithm and ensures early recognition of collapse. (d) check for breath: Incorrect. Breathing is checked after assessing responsiveness and calling for help. (e) question not attempted: Not applicable.