The correct answer is radical.
A radical is someone who advocates for extreme political or social change. A revolutionary is someone who attempts to overthrow a government or social system by force. A nihilist is someone who believes that nothing has any real meaning or purpose. An anarchist is someone who believes that all forms of government are oppressive and should be abolished.
A moderate is someone who holds moderate or middle-of-the-road views on political or social issues. Moderates are often seen as being more practical and realistic than radicals, revolutionaries, or nihilists. They are also often seen as being more willing to compromise and work with others to find solutions to problems.
Here is a table that summarizes the key differences between the four terms:
| Term | Definition |
|—|—|
| Radical | Someone who advocates for extreme political or social change |
| Revolutionary | Someone who attempts to overthrow a government or social system by force |
| Nihilist | Someone who believes that nothing has any real meaning or purpose |
| Anarchist | Someone who believes that all forms of government are oppressive and should be abolished |
I hope this helps!