The correct answer is (d) Brazil.
Brazil is the only country in the world that has made it mandatory to blend ethanol with gasoline. The country has been blending ethanol with gasoline since the 1970s, and the blend rate has increased over time. In 2020, the blend rate was 27%.
There are several reasons why Brazil has made it mandatory to blend ethanol with gasoline. One reason is to reduce the country’s dependence on imported oil. Brazil is a major producer of sugarcane, which is used to produce ethanol. By blending ethanol with gasoline, Brazil can reduce its reliance on imported oil.
Another reason for Brazil’s mandatory ethanol blend is to reduce air pollution. Ethanol is a cleaner-burning fuel than gasoline, and it can help to reduce emissions of pollutants such as carbon monoxide and hydrocarbons.
Finally, Brazil’s mandatory ethanol blend also supports the country’s agricultural sector. The production of sugarcane creates jobs and generates income for farmers.
The other options are incorrect. China, the U.K., and Switzerland do not have mandatory ethanol blends.