Which of the following is NOT a responsibility of a first responder when arriving at a scene?

A first responder's primary responsibilities upon arriving at a scene involve ensuring safety, providing assistance, and managing the situation effectively. Among these duties, notifying others is critical to ensure that additional resources or specialized personnel can be engaged to handle the circumstances at hand. Assessing the surrounding area is equally vital, as it helps to identify potential hazards or threats and understand the scene's dynamics.

Searching the scene can also be important for locating victims or evidence, but this should be done with caution and coordination with other responding agencies, especially if a crime may have occurred.

Processing a death scene, however, typically falls outside the scope of a first responder's immediate responsibilities. This task is generally the purview of specialized investigators and crime scene personnel who are trained to handle death investigations. First responders are expected to secure the scene and ensure that it remains uncontaminated until those specialists arrive. Therefore, the task of processing a death scene is not a responsibility expected of first responders, making it the correct answer to this question.