What information do the engine/systems displays provide?

The information provided by the engine/systems displays includes essential parameters reflecting the operational status of the aircraft’s propulsion system. The correct choice highlights critical indicators like oil temperature, oil pressure, hydraulic pressure, DC volts, and DC amps. These metrics are vital for monitoring the health and performance of the engine and its supporting systems, as they provide real-time data that pilots need to ensure safe operation.

Oil temperature and pressure are key for assessing engine lubrication health, while hydraulic pressure is crucial for confirming that various flight control systems are operating properly. DC voltage and amperage readings are important for monitoring electrical system performance, including the health of the battery and other electrical components. Collectively, these pieces of information allow pilots to make informed decisions regarding engine performance and overall aircraft reliability.

The other choices offer different sets of data or a mix of relevant information, but they do not align specifically with the comprehensive range of engine/system parameters represented in the correct answer. For instance, while engine speed and fuel flow are important, they do not encompass the same breadth of system health indicators necessary for a complete understanding of the engine's operational status.