Where can fuel supply containers be located on vehicles?

Fuel supply containers can be located within, below, or above the driver or passenger compartment as long as their connections are external. This flexibility in placement allows for better utilization of space in the vehicle and can help in optimizing weight distribution for safety and performance.

The focus on having external connections is crucial because it ensures that there is a safe and proper pathway for the fuel to be delivered to the engine without risking leakage or exposure inside the passenger areas. This design is particularly important for safety standards that govern how fuel systems are integrated into vehicles.

The other options restrict fuel container placement to less practical or more dangerous locations, which could compromise safety and vehicle operation. Therefore, this option is the most comprehensive and aligns with safety regulations concerning fuel system configurations in vehicles.