In order to get a ready indication for a normal start with a GE LM2500 marine gas turbine, what permissive(s) must be met?

Correct Answer: Option D — All of the above.

GE LM2500 start permissives ensure engine safety by verifying fuel pressure, confirming the bleed air valve is closed to prevent compressor surge, and ensuring the gas generator is at a safe starting speed. All these conditions must be satisfied to prevent mechanical damage during the ignition sequence.