Which of the following is the first step in the CERT size-up process?

The first step in the CERT size-up process is to gather facts. This step involves collecting crucial information about the emergency situation to understand its scope and impact. Gathering facts allows responders to identify the nature of the hazard, the number of affected individuals, and any immediate risks that might pose a danger to them or the responders themselves.

By focusing on gathering facts, responders can make informed decisions about how to proceed. This initial assessment is essential for effective response coordination, as it lays the groundwork for establishing priorities and developing a plan of action. Accurate information helps in determining which actions should be taken first to ensure the safety of everyone involved.