Which protections does the FADEC provide?

The correct choice highlights the essential protections that a Full Authority Digital Engine Control (FADEC) system offers in managing aircraft engines. Specifically, the FADEC system is designed to monitor and control various aspects of engine performance to ensure safe and efficient operation.

In this context, protections against start malfunctions, overspeed conditions, and flameout risks are critical functions provided by FADEC. The system continuously monitors engine parameters during all phases of operation, including the start-up sequence. If any parameters deviate beyond safe limits, such as high speeds or unexpected engine performance changes, FADEC can take corrective actions or alert the pilot, thus enhancing safety.

While options referring to monitoring power output, engine shutdown, and fuel mixture adjustments address various functions of engine control systems, they do not encompass the suite of protective measures specifically aimed at preventing potentially hazardous events like overspeed and flameout. This makes the choice regarding start, overspeed, and flameout protections the most comprehensive in terms of what FADEC is designed to handle.