<em>Answer: </em>
<em>public service announcement </em><em> </em>
<em>Explanation:</em>
<em><u>The term public service announcement</u></em><em> is described as a particular message in the "public interest" that is being disseminated in the absence of any charge, encompassing the objective or motive of spreading awareness of, and changing or altering public behaviors and attitudes towards a specific social issue or cause.</em>
<em><u>As per the question, the correct answer is the public service announcement.</u></em>
The answer is letter A. The Clear Air Act would be a reason for the Environmental Protection Agency or EPA to regulate car emissions. EPA sets the emission standards under the said rule or regulation and this also covers the green house gas emissions.