What does the auto fuel balance system correct for?

The auto fuel balance system is designed to correct for a specific weight imbalance of fuel in the aircraft's fuel tanks. In this case, the correct answer indicates that the system is capable of addressing a 20 lbs imbalance.

This feature is crucial for maintaining the aircraft's overall balance during flight, which directly impacts performance, stability, and safety. Having an accurate and functioning fuel balance system ensures that the aircraft can automatically redistribute fuel between its wings or tanks as necessary to compensate for discrepancies in fuel levels, contributing to a more balanced and efficient flight operation. The other values provided do not pertain to the standard capacity of the auto fuel balance system, rendering them less relevant in this context.