Sociologist that declares environmentalism is the most comprehensive, influential movement of our time is Sociologist Manuel Castells. The activist subculture of the late 1960s and early 1970s inspired people especially youth to participate in a direct action concerning social issues. Second, the dissemination of systematic knowledge about serious environmental difficulties like air pollution and oil spill frightened many Americans, and third, the increasing popularity of outdoor leisure enlarged the number of people who were worried about the environment.
The direct result was the creation of the Progressive or Bull Moose party, because as Roosevelt mentored Taft to become his successor as president of the USA, and as Taft based his government on a different branch of Republicanism that Roosevelt disliked, the latter decided to create his own party, that did not received enough support and this resulted in the election of the Democrat Woodrow Wilson.
I guess the last choice ?
B. The emergence of polished stone tools caused the emergence of agriculture
