Which of the following defines ethanol?

Ethanol is defined as a product derived from fermentation that is commonly used as a fuel. This process involves the conversion of sugars found in crops such as corn, sugarcane, and other biomass into alcohol through microbial fermentation. Ethanol can be blended with gasoline to produce a renewable fuel source that can lower greenhouse gas emissions compared to traditional fossil fuels.

The relevance of this definition also ties into environmental concerns and the push for energy independence, as ethanol can serve as an alternative energy source. This makes it significant in discussions around sustainable agriculture and energy production. Understanding ethanol's role in fuel production aligns with the broader topics of agribusiness, energy policies, and the agricultural economy, emphasizing its importance in the context of modern agriculture and resource management.