Detailed explanation and options for the selected question.
The Vice President of India is the ex-officio Chairman of the Rajya Sabha and presides over its sessions. Option "Dissolving the Lok Sabha" is incorrect, as this power lies with the President. Option "Appointing the Chief Justice of India" is incorrect, as this is the President’s responsibility. Option "Appointing the President" is incorrect as the Vice President does not have this power.