Respuesta :
The requirement of the Clean Air Act include cleaner-burning gas being used in cars which is denoted as option B.
What is Clean Air Act?
This act was formulated in order to ensure a reduction in air pollution in the country.
This act ensured that cleaner burning gas was used in automobile manufactures which was why it was chosen as the most appropriate choice.
Read more about Clean Air Act here https://brainly.com/question/9265702