Question: How are the Clean Air Act's tailpipe emission standards set? Multiple Choice Each state must use the federal standards. Each state adopts its own standards.
How are the Clean Air Act's tailpipe emission standards set? Multiple Choice
Each state must use the federal standards.
Each state adopts its own standards.
Each state may choose between the federal and California standards.
The car manufacturers set the emission standards based on the state in which the car was sold.
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