While underway on a ship with gas turbine engines, the most likely indication of an engine stall is which of the following?

Correct Answer: Option D — All of the above.

An engine stall is characterized by a sudden disruption in airflow, leading to a loud bang, rapid temperature spikes in the combustor, and an inability of the engine to accelerate. These symptoms indicate a loss of compressor stability, requiring immediate operator intervention to prevent severe internal engine damage.