Inconsistent ______ readouts.

• A. Altitude
• B. Pressure
• C. Instrument
• D. Temperature

Answer: (C)

When instrument readouts are inconsistent, the issue is with the instrument system itself rather than a single measured value. This signals a possible sensor fault, interference, or calibration problem, so you should treat the entire instrument suite as unreliable and rely on cross-checks from other trusted data sources, perform the appropriate health checks, and move to a safe procedure if needed. Other options describe specific parameters that can vary due to environment or sensor drift, but the prompt points to the fault being in the instrument system as a whole, which is why this word fits best.