Final answer:
The Quadra-Trac II system is a four-wheel-drive system found in Jeep vehicles, such as trucks and SUVs, for improved off-road and all-weather performance.
Step-by-step explanation:
The Quadra-Trac II system is an advanced four-wheel-drive system found in various Jeep vehicles. It is designed to provide better off-road capability and all-weather performance by actively transferring power to the wheels that need it most. When one or more wheels lose traction, the system automatically distributes the available torque to the wheels with grip to enhance stability and control. The Quadra-Trac II system is typically found in trucks and SUVs, making them highly capable in rugged conditions.