Which of the following is NOT a component of a scene size up?

• A. Scene safety
• B. Number of patients
• C. Any additional help
• D. Weather conditions

Answer: (D)

Scene size-up is the quick, initial assessment you do at the scene to decide if it’s safe to approach and what resources you’ll need. The key parts are making sure the scene is safe, determining how many patients there are, and deciding if additional help or other resources are needed. Weather conditions can influence safety and operations, but they aren’t a separate item on the size-up checklist. They affect how you proceed, not the list of components you systematically assess. That’s why weather conditions isn’t considered part of the scene size-up.