How does high-octane fuel typically burn in comparison to regular fuel?

High-octane fuel burns in a more controlled manner compared to regular fuel, which is particularly important for high-performance engines. The term "high-octane" refers to the fuel's ability to resist knocking or pre-ignition. This characteristic allows engines designed to run on high-octane fuel to operate at higher compression ratios and provide better performance without the risk of detonation.

In engines optimized for high-octane fuel, the combustion process is more gradual and controlled, leading to a more efficient energy release. This results in smoother engine operation, increased power output, and improved overall efficiency.

In contrast, regular fuel may ignite too early under certain conditions, leading to knocking, which can cause engine damage and reduced performance. Thus, the controlled burn of high-octane fuel is critical for engines that require it, making option C the correct choice.