Answer:
A. Call for a PAR.
Step-by-step explanation:
PAR (Personnel Accountability Report) is used in emergency services, such as firefighting, to account for the location and welfare of all personnel operating at the scene. If the IC (Incident Commander) does not receive any progress reports from the interior crew, calling for a PAR will help the IC to determine the status and location of the interior crew. This will allow the IC to maintain situational awareness and make decisions based on the information available.