What caused president richard nixon to act on environmental issues? a.  nixon had always been an environmentalist. b.  the environmental protection movement was supported by public. c.  the republican party supported environmental protections. d.  smog in london killed 12,000 people in 1952

The correct answer is B. The environmental protection movement was supported by public.

Explanation

Richard Nixon was the thirty-seventh president of the United States of America, who ruled during the period from 1968 to 1974, During his government, Nixon founded in 1970 one of the most important institutions in the United States, the Environmental Protection Agency, with the main objective of preserving human life by taking care of the environment, air, water and soil as indispensable resources for life. Also, during that same year, April 22 was established as International Earth Day as public support for the environmental movement. So, the correct answer is B. The environmental protection movements was supported by public.