How many fuel probes are situated in the left mid tank of the fuselage?

The correct answer indicates that a total of two fuel probes are located in the left mid tank of the fuselage. This configuration is typical in aircraft fuel systems, where multiple probes are utilized to accurately measure fuel levels and ensure redundancy in the measurement system. Having two probes allows for cross-checking and enhanced reliability, as one probe can serve as a backup should there be a malfunction with the other. By utilizing two probes, the system can provide more accurate and consistent readings of the fuel quantity, which is crucial for flight planning and operational safety.

In contrast, the other choices suggest a different quantity of probes, which would not align with the standard designs found in the fuel systems of many aircraft. For example, having only one probe might increase the risk of inaccurate readings if that sole probe were to fail, while three or four probes could be unnecessarily complex or redundant for the intended purpose in this specific tank configuration. Hence, the presence of two probes in the left mid tank not only meets functional requirements but also enhances the overall safety and accuracy of fuel management in flight operations.