What is the minimum fuel required for go-around per wing?

The requirement for minimum fuel for a go-around per wing is 450 pounds. This is established based on the aircraft's operational safety mandates to ensure that there is sufficient fuel not only to effectively complete a go-around maneuver but also to account for any contingencies that might arise during the approach or landing phases of flight.

The 450-pound figure reflects the need for adequate thrust and performance capabilities in case of a missed approach, where the pilot must execute a go-around procedure due to various potential reasons such as runway obstructions or safety concerns. This amount helps to ensure that after executing a go-around, the aircraft can maintain the required climb performance, remain within safe operational weights, and allow for a secure and reliable approach for another landing attempt.

The other options do not meet the safety and operational requirements set forth for practical flight conditions, which include aspects such as engine performance and flight safety considerations.