Who led the fight to end the testing of nuclear weapons above ground in the 1960s?*1 pointa. Theodore Rooseveltb. Barry Commonerc. César Chávezd. Paul Ehrlich

The fight to end the testing of nuclear weapons above ground in the 1960s was prominently led by Barry Commoner. He was an influential biologist, eco-socialist activist, and a key figure in the environmental movement during that time, advocating for nuclear disarmament and raising public awareness about the dangers of nuclear testing. His efforts were instrumental in pushing for the Partial Nuclear Test Ban Treaty, which aimed to prohibit nuclear tests in the atmosphere.

In contrast, Theodore Roosevelt, César Chávez, and Paul Ehrlich were significant figures in their respective fields but did not primarily focus on nuclear disarmament during the 1960s. Thus, the correct answer is:

b. Barry Commoner.