Which of the following items is commonly found on a rescue truck?

A rescue truck is specifically designed to support emergency response situations that involve technical rescue operations. One of the primary focuses of a rescue truck is to provide the necessary equipment for extrication and medical response in various emergency scenarios such as vehicle accidents, structural collapses, and hazardous material incidents.

Extrication tools, often referred to as the "Jaws of Life," are critical for safely removing victims from wrecked vehicles or trapped environments. Additionally, medical supplies are essential for providing immediate care to injured individuals until they can be transported to a medical facility. Having both extrication tools and medical supplies readily available ensures that rescue personnel can effectively manage a crisis and significantly improve victim survivability.

In contrast, while fire hoses, emergency lighting systems, and fire extinguishers are important apparatuses, they primarily serve firefighting roles or general scene safety rather than the specialized functions performed by a rescue truck. Hence, the presence of extrication tools and medical supplies is a defining characteristic of a rescue truck, making it the correct choice.