which of the following is part of the ignition system?\na coil\nb generator\nc alternator\nd thermostat

Brief Explanations:

The ignition system in an engine uses a coil to transform low - voltage current into high - voltage current to create a spark for combustion. A generator and alternator are related to electrical power generation for the vehicle's electrical system, not the ignition system. A thermostat is related to engine cooling, not ignition.

Answer:

A. coil