Which assistance should be requested after reviewing collision circumstances?

The correct choice is best understood when considering the typical procedures that follow a collision. After assessing the circumstances of the incident, it is critical to determine the needs for immediate assistance. Option C includes a comprehensive range of emergency services—ambulance for medical emergencies, EMS personnel for advanced medical care, firefighting equipment for potential fire hazards, and tow trucks for vehicle removal.

This breadth of assistance is essential as collisions can lead to various emergencies, such as injuries that require medical attention, hazardous materials that may need containment, or vehicle debris that can obstruct traffic. Relying solely on an ambulance or any limited selection of services may not adequately address all potential emergencies that arise from a collision scenario. Therefore, ensuring that all necessary services are summoned helps to manage the situation effectively and ensures safety for all involved.