Final answer:
B. Dual magneto ignition. Most general aviation aircraft use a dual magneto ignition system, which offers redundancy and reliability over a single magneto system. Modern aircraft may feature electronic ignition systems for improved performance.
Step-by-step explanation:
The type of ignition system used in an airplane can vary depending on the engine design and the aircraft's functionality. However, one of the most common types found in general aviation aircraft with piston engines is the dual magneto ignition system. This system utilizes two separate magnetos, each providing its own source of electrical energy to the spark plugs. By having two magnetos, the engine can operate more safely; if one fails, the other can keep the engine running. Contrast this with a single magneto ignition, which would leave the engine without a spark if the magneto failed. Some modern aircraft engines employ an electronic ignition system, which provides more precise control over the timing of the spark and can lead to improved engine performance and efficiency. However, the traditional dual magneto system still predominates in the aviation industry due to its simplicity and reliability.
An airplane's ignition system is essential for engine operation. It ignites the fuel-air mixture in the engine's cylinders, leading to combustion that powers the aircraft. While some modern aircraft might use an electronic system or even a combination of electronic and magneto systems, many small to medium-sized airplanes utilize the tried-and-true dual magneto system.