The correct answer is option 4 - Attorney General.

The Attorney General is the highest legal advisor to the government and is also known as the "guardian of the public interest". While the Attorney General does not have the right to vote, they can participate in the proceedings of either house of the Parliament. This allows them to provide legal opinions, advice, and expertise during discussions on important matters.

Option 1 - Chief Justice of India is incorrect because although the Chief Justice of India is an important figure in the judicial system, they do not have the right to participate in parliamentary proceedings.

Option 2 - President of India is incorrect because the President is the head of state and does not have a right to participate in the proceedings of either house of the Parliament.

Option 3 - Comptroller and Auditor General is incorrect because although they play an important role in auditing the government`s finances, they do not have the right to participate in parliamentary proceedings.