Can the Vice-President of India hold any other office of profit besides being the Chairman of the Rajya Sabha?

Correct option is C

Correct Answer (C) No, as per Article 64 of the Constitution
Explanation
The Constitutional Bar: Article 64 is the specific provision that mandates the Vice-President shall be the ex-officio Chairman of the Rajya Sabha and explicitly prohibits holding any other office of profit.
Role of Article 97: While Article 97 discusses the salaries and allowances of the Chairman, it does not create the legal restriction. It simply ensures the Chairman is paid for their service.
Separation of Roles: The prohibition exists to ensure that the presiding officer of the Upper House remains independent of executive influence or external financial gain.
Therefore, the correct answer is (C).
Information Booster
Ex-Officio Status: The Vice-President automatically becomes the Chairman of the Rajya Sabha by virtue of their election; no separate appointment is required.
Salary Source: The Vice-President does not receive a salary for being the "Vice-President." Instead, they draw their salary as the Chairman of the Rajya Sabha under Article 97.
The "Presidential" Switch: If the Vice-President acts as the President (under Article 65), they stop performing Chairman duties and cease to draw the salary mentioned in Article 97, receiving the President's pay instead.
Consolidated Fund: The salary for this office is charged upon the Consolidated Fund of India, meaning it is not subject to an annual vote in Parliament.