Option A: 'Plagiarist' is 'a person who steals the writing/ideas of others, publishing it as their own work'.
Option B: 'Anarchist' is 'a person who believes in self-governed societies based on voluntary, cooperative institutions'.
Option D: 'Sadist' is 'a person who derives pleasure from causing harm to others'.
These words do not mean the same as the given group of words. So, it cannot replace them.
Hence options A, B and D are incorrect.