Effluent guidelines are: a. part of the Clean Air Act. b. part of the National Environmental Policy Act. c. part of the Clean Water Act. d. developed by the states. e. none of the above

The answer is a. part of the Clean Water Act

Explanation:

Effluent guidelines are part of the Clean Water Act which is an act or law passed by the United States federal government to promote clean air and protect public health by establishing air quality standards and placing limits on emissions that pollute air.