参考答案

正确答案：C
解析：细节题。根据题干信息词Antipollution legislation定位到第六个小标题第二句Without the continued pressure from environmentalists，antipollution legislation would not have been enacted，and many pollution-reducing devices would not have been invented，即：没有来自环境学家的压力，反污染规则不会被实行，许多减少污染的工具