Question 5.

Option A: The various derivations of anarchism cannot be associated with Pierre-Joseph Proudhon. We don't have the requisite information to support this claim.

Option B: This has been presented as the motto of every anarchist faction: wherein the state is the enemy {opposition to the centralization of power}. While there are additional beliefs associated with different schools of anarchist thought, this antagonism towards centralised power forms their core. 

Option C: This belief has been shown to be limited to individualist anarchism {based on the information from the passage}; cannot be stated as a common attribute.

Option D: This assertion would be a gross understatement; the latter half of the option is especially a bit odd {no such idea has been implied}.

Hence, of the given choices, Option B is the correct answer.