Which of the following is a component of a scene size up?

• A. Scene safety
• B. Time of day
• C. Transport method
• D. Medical history

Answer: (A)

In scene size-up, the first and most critical element is scene safety. You quickly assess for hazards that could harm you, the patient, or bystanders—things like traffic, fire, structural instability, chemicals, or an aggressive person—and you take steps to protect everyone and secure the environment before doing anything else. This protects you so you can safely perform the rest of the assessment and care.

Time of day isn’t a formal component of scene size-up, even though darkness or poor lighting can influence safety considerations. Transport method and medical history are addressed later: transport plans come after evaluating the scene and patient needs, and medical history is gathered during the patient assessment, not during the scene-size-up phase.