What is NOT a purpose of the EPA as per the Clean Air Act?

The correct answer highlights a function that does not fall within the EPA's objectives under the Clean Air Act. The EPA is primarily focused on protecting environmental quality and public health regarding air quality and pollution. This encompasses establishing emission limitations to control the amount of pollutants released into the atmosphere, promoting public health and welfare by ensuring clean air, and conducting research on methods to prevent air pollution.

Standardizing corporate energy consumption, however, is not a direct purpose of the EPA as outlined in the Clean Air Act. While energy consumption can impact air quality, the Act does not specifically mandate the standardization of energy usage across corporations. Instead, it focuses on regulating emissions and setting air quality standards to safeguard public health and the environment. Thus, this choice correctly identifies an objective that is outside the scope of the EPA's mandates under this legislation.