The______ and its amendments require automobile manufacturers to cut new automobiles' exhaust emissions by a certain percentage by a given date.

A) Automobile Emissions Act of 1970
B) Clean Air Act of 1970
C) Clean World Act of 1970
D) National Environmental Policy Act of 1969

The Clean Air Act of 1970 and its amendments are responsible for requiring automobile manufacturers to reduce the exhaust emissions of new automobiles by a specific percentage by a designated date. This legislation focuses on improving air quality and reducing air pollution from various sources, including motor vehicles.