Which of the Following Is True of the NAAQS

Multiple Choice

Which of the following is true of the NAAQS?

A) The federal government has the right to enforce these air pollution standards if the states fail to do so.
B) The state governments are responsible for setting standards for air quality in their respective state.
C) Human beings are protected under the secondary level of the NAAQS.
D) Only standards for oxides of elements and particulate matter are evaluated under the NAAQS.