Transportation is the largest single source of air pollution in the United States. Air pollution can harm the environment and human health.Which technology could offer a solution to this problem?

Electric motors can power vehicles without burning gasoline or diesel while they operate, reducing tailpipe emissions that contribute to air pollution. Mufflers reduce noise, not pollution. Tires that improve gas mileage may reduce fuel use and emissions, but electric motors offer the clearest direct solution among these choices.

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