What describes the fuel system configuration in the aircraft?

The fuel system configuration in an aircraft is crucial for ensuring efficient engine operation and safety. The correct answer highlights a setup that includes two vented tanks with a three-position selector valve.

Having two vented tanks means that each tank can properly equalize pressure as fuel is consumed, ensuring that fuel can flow freely to the engine without creating a vacuum that might impede fuel delivery. The three-position selector valve allows the pilot to choose between different fuel sources (e.g., either tank or both tanks simultaneously), which enhances operational flexibility and redundancy in fuel management. This is especially important in flight to maintain engine performance and manage fuel balance.

Configurations involving just gravity feed systems or single external tanks with electric pumps typically lack the comprehensive fuel management features that enhance safety and operational versatility, while a gravity-fed system with no valves does not provide the necessary control over fuel distribution and might lead to inefficiencies or operational risks. A well-designed fuel system is essential for both performance and safety in aviation.