Which statement is true about a magneto ignition system?

A magneto ignition system is designed to produce a spark for igniting the fuel-air mixture in internal combustion engines. One key characteristic of a magneto ignition system is that it generates its own electrical power, allowing it to operate independently of the vehicle's electrical system.

The statement about producing a hotter spark at high speeds accurately reflects one of the advantages of magneto ignition systems. As the engine speed increases, the magneto generates higher voltage, leading to a more intense spark. This is particularly beneficial in performance situations where reliable ignition is necessary for optimal engine performance. Consequently, at higher engine speeds, the magneto's design helps ensure a stronger and more consistent spark, which aids in better combustion and efficiency.

The other options do have elements of truth regarding magneto systems, but they do not align as closely with the significance of spark intensity in relation to engine performance, which makes the assertion regarding the hotter spark at higher speeds the most relevant and accurate.