What are the basic components of an ignition system in a gasoline engine?

The components listed in the correct answer are fundamental to the operation of the ignition system in a gasoline engine. Each plays a critical role in generating and delivering the spark necessary to ignite the air-fuel mixture in the engine's combustion chamber.

The battery provides the electrical energy required to start the engine and power the ignition system. The ignition coil transforms the battery’s low voltage into a high voltage necessary for creating a spark. This high voltage is then directed to the distributor, which distributes the electrical current to the appropriate cylinder via the spark plugs at the right timing. The spark plugs ignite the air-fuel mixture, facilitating the engine’s power stroke. The ignition switch allows the driver to control the ignition system's operation, enabling or disabling the current flowing from the battery to the rest of the ignition components.

In contrast, the other options detail components that pertain to different engine systems. For example, the alternator and starter are part of the electrical starting system, while components like the fuel tank and carburetor are essential for the fuel system. Engine mechanics such as the crankshaft and camshaft relate to the engine's mechanical operation rather than the ignition process. Understanding these distinctions is crucial for recognizing the specific roles of ignition system components.