Which methods can ignite gas from a burner?

The correct answer highlights methods commonly used to ignite gas burners effectively. Manual ignition involves using a lighter or matches to directly ignite the gas, which is a straightforward approach familiar to many. Pilot lights are small, continuously burning flames that stay lit and can ignite the larger flow of gas when needed. They are widely used in gas appliances to ensure immediate ignition when gas is turned on. Pilotless igniters, often in the form of electronic ignition systems, create a spark or high-temperature source that ignites the gas efficiently without the need for a continuous flame.

These methods are practical and safe ways to initiate the combustion process in gas appliances. Manual ignition and pilot systems have a long history in residential heating and cooking, while modern pilotless systems utilize advancements in technology to enhance safety and efficiency in gas ignition.

Other options might mention intriguing concepts like chemical reactions or static electricity; however, they do not directly correlate with standard methods of igniting gas from a burner and could involve more complex mechanisms that are less commonly employed in typical household settings.