Statement A is incorrect. The passage does not focus solely on the ability to bring the government to book in a court of law but emphasizes the broader concept of government accountability in preserving liberty.

Statement B is incorrect. Identifying a man as a political unit distinct from others does not directly relate to the justification of government accountability in safeguarding liberty.

Statement C is incorrect. While a decentralized society may ensure basic needs, it does not address the relationship between liberty and government accountability as discussed in the passage.

Statement D is correct. The passage implies that liberty can only be meaningful when balanced with restraints, ensuring that the government remains accountable for any actions that infringe upon individual rights.