Which of the following was a success of the Clean Air Act?(1 point) Responses The U.S. gross domestic product decreased, which allowed the amount of emissions to decrease. The U.S. gross domestic product decreased, which allowed the amount of emissions to decrease. There are no environmental issues left to research. There are no environmental issues left to research. No additional Clean Air Acts had to be passed after 1970. No additional Clean Air Acts had to be passed after 1970. Although the U.S. gross domestic product increased, the amount of emissions decreased.

The correct answer is: Although the U.S. gross domestic product increased, the amount of emissions decreased.