Answer:
Option B.)
Step-by-step explanation:
President George H. W. Bush's Clean Air Act amendments addressed "pollution of the atmosphere caused by smog and acid rain," which is option B.
The Clean Air Act is a United States federal law designed to regulate air pollution on a national level. The amendments made in 1990 by President George H. W. Bush aimed to reduce acid rain, urban air pollution, and toxic air emissions from industrial sources. The amendments set stricter standards for air quality and required specific actions to reduce emissions from power plants and industrial sources. The goal of these amendments was to protect public health and the environment by reducing air pollution that can cause respiratory problems, acid rain, and other negative effects.