Final answer:
The correct answer is a firetruck, which is equipped to extinguish fires and conduct rescue efforts, making it the primary mobile fire/rescue unit responding to incidents.
Step-by-step explanation:
The mobile fire/rescue unit that responds to the scene of fire/rescue incidents is known as a firetruck. Firetrucks are equipped to control and extinguish fires, protect life and property, and conduct rescue efforts. They carry a variety of equipment, including hoses, ladders, and tools for breaking through barriers, as well as medical supplies to administer first aid. Firefighters may also perform searches for victims in hazardous environments, rescue them from perilous situations such as burning buildings, accident sites, and water hazards, and provide essential medical attention until more advanced care is available.
Although ambulances and helicopters can also be involved in rescue operations, they primarily serve to provide medical attention and transport patients to hospital facilities. Similarly, police cars are typically involved in law enforcement, security, and traffic control during such incidents. However, it is the firetruck that is specifically designed for firefighting and rescue operations, often arriving first at the scene to manage the critical efforts to save lives and mitigate damage from the fire or other emergencies.
Therefore, the correct answer to the student's question is option 1) Firetruck.