The correct answer is B) 2 fuel igniters would be installed on the marine gas turbine engine shown in the illustration GT-0017. Typically, marine gas turbine engines are designed with two fuel igniters to provide redundancy and ensure reliable ignition of the fuel-air mixture. This redundancy is important for the safe and reliable operation of the engine, as the failure of a single igniter would not result in a complete loss of ignition capability. The other answer choices are incorrect because 1 igniter would not provide the necessary redundancy, 3 igniters would be unnecessary, and 4 igniters would be an atypical configuration for a marine gas turbine engine of this size and type.