Answer:
Sasha can add the following information about the EPA to her research paper:
A. They monitor air quality.
Step-by-step explanation:
The EPA, also known as the Environmental Protection Agency, is a governmental organization that was created to protect human health and the environment. They are responsible for setting and enforcing air and water quality standards, ensuring that the environment is protected from pollution and contamination. In particular, they monitor air quality to ensure that it meets the standards set by the Clean Air Act. They do this by measuring the levels of pollutants in the air, such as carbon monoxide, sulfur dioxide, and particulate matter, and then taking action to reduce the levels of these pollutants if they exceed the standards.
Therefore, option A is the correct answer.