Final answer:
The criticism of Greta Thunberg primarily comes from the natural resistance to change that social movements encounter, with emphasis on how collective action is necessary to achieve significant political and policy changes.
Step-by-step explanation:
Internationally known environmentalist Greta Thunberg has faced criticism in her efforts to address environmental issues. The basis for this criticism often stems from the resistance to change that is a commonplace reaction to social movements. As environmentalism clashes with powerful interests opposed to taking action, critics may emerge to challenge the movement's goals, methods, or leaders. In Thunberg's case, one specific point of criticism could be c. Social movements are often subject to criticism by those resisting change. Thunberg's activism serves as a catalyst for group action, which is required to effect political decisions and drive change in policies addressing climate change.