The EPA and Clean Air Act · US History

In the 1970s, the EPA successfully phased out the use of lead in gasoline, which resulted in:

  1. A total and permanent collapse of the entire U.S. oil industry
  2. Cars becoming completely unable to drive faster than 30 mph
  3. A significant drop in blood lead levels in American children
  4. A significant increase in the nationwide price of bread
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Correct answer: A significant drop in blood lead levels in American children

Lead was a major neurotoxin emitted in vehicle exhaust. The EPA’s intervention is considered one of the most successful public health initiatives in history, directly correlating with improved cognitive development in the population.

Difficulty: Medium Question 13 of 20

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