Final answer:
Rachel Carson was an environmental pioneer because her book, 'Silent Spring,' highlighted the dangers of pesticides and influenced environmental awareness and policy.
Step-by-step explanation:
The best supporting evidence that Rachel Carson was an environmental pioneer can be found in sentence D: "Written in her clear, poetic style, it educated her readers about the dangers of pesticides, particularly DDT, to all forms of life." This sentence highlights Carson's role in environmental advocacy, her focus on the detrimental effects of pesticides like DDT, and her influence on public awareness and policy regarding environmental conservation.
The sentence that presents the best supporting evidence that Rachel Carson was an environmental pioneer is option D: Written in her clear, poetic style, it educated her readers about the dangers of pesticides, particularly DDT, to all forms of life. This sentence highlights Carson's influential work in informing and educating the public about the harmful effects of pesticides on the environment and all living beings. It demonstrates her commitment to raising awareness and taking action to protect the natural world.