What could be a consequence of not properly managing fuel during a flight?

Not properly managing fuel during a flight can lead to fuel starvation, which is a critical situation where the engine does not receive the fuel it requires for operation. Consequently, this can result in engine failure. The Cessna 172, like any aircraft, relies on a consistent and adequate fuel supply to maintain engine performance and ensure safe operation. If fuel levels are not monitored and managed effectively, it can lead to running the tanks dry or having improper fuel balance, which can cause the engine to surge, sputter, or fail entirely.

In contrast, the other options highlight outcomes that do not arise from poor fuel management. Improved engine performance and increased flight speed typically depend on adequate fuel supply and correct operational procedures. Similarly, longer flight durations are generally a product of proper fuel management, ensuring that fuel is conserved and utilized efficiently throughout the flight. Thus, the importance of attentive fuel management cannot be overstated, as the risk of fuel starvation leading to engine failure is a very real consequence in aviation.