Final answer:
The engine crew would likely assist the MVA victim with his dog by safely securing the dog to prevent additional issues at the accident scene.
Step-by-step explanation:
The student is asking about how the engine crew assisted the MVA (motor vehicle accident) victim with his dog. Among the options given, the most logical and common response would be for the engine crew to safely secure the dog. This action would ensure the dog does not run into traffic or cause additional issues at the scene of the accident. The crew would typically not provide veterinary care because they are not trained veterinarians.
Ignoring the dog would be irresponsible, and while calling animal control might be appropriate in some cases, securing the dog is often the immediate concern to prevent further harm.