The outlet allows fuel to...

• A. Enter the system
• B. Exit the system
• C. Flow to the pump
• D. Mix with air

Answer: (B)

The outlet serves as the discharge point of a fuel system, whose role is to let fuel leave the system and move on to the next stage. That’s why the best completion is that the outlet allows fuel to exit the system. It’s not about entering the system (that would be an inlet), and while fuel may flow toward the pump, the defining function of an outlet is to provide an exit path. It also isn’t about mixing with air, which involves venting or air intake rather than the exit path.