Which of the following is a common use of crude oil fractions?

Crude oil fractions have a wide range of uses, making them crucial in various industries. The correct choice highlights that these fractions are primarily used as fuels, such as gasoline, diesel, and kerosene, which power transportation and heating systems. In addition, they serve as feedstocks for producing essential chemicals and materials, including plastics, solvents, and detergents. This versatility ensures that crude oil fractions play a significant role in both energy production and the manufacture of various products.

The other options imply a narrower scope of use. While plastics are indeed produced from crude oil fractions, this is only one application among many. Similarly, although some cleaning materials may derive from crude oil derivatives, it's not accurate to say these fractions are exclusively used for such products. Agricultural pesticides may also have chemical components from petrochemical sources, but they represent a very specialized application of crude oil fractions rather than a common or primary use. Thus, the broader categorization of crude oil fractions as fuels and feedstocks best captures their importance in both energy and chemical production.