During which process is ethanol produced

The correct answer is B), alcohol fermentation.

Ethanol is produced from biomass via a fermentation process that uses glucose derived from different types of sugars like molasses and sugar cane or starch, corn, or even cellulose. These elements are renewable.  

There is another way to produce ethanol from non-renewable sources like coal and gas. It is known as Synthetic ethanol.

Ethanol is a type of alcohol that kills organisms and can be used in gasoline, antibacterial soaps, and hand sanitizer gels.

answer; the region experienced a surplus of food;