Fuels with a higher octane number can be produced by _?

Explanation

Fuels with a higher octane number can be produced by reforming. Reforming is a refining process used in the petroleum industry to increase the octane rating of gasoline. During this process, the molecular structure of hydrocarbons in gasoline is altered, resulting in the production of compounds with higher octane numbers. This is achieved by rearranging and converting low-octane straight-chain hydrocarbons into high-octane branched or cyclic hydrocarbons. The reforming process is critical for producing high-octane gasoline, which is important for preventing engine knocking and improving fuel efficiency in internal combustion engines.