The correct answer is option B) Rajya Sabha. The Rajya Sabha is presided over by a non-member, known as the Vice-President of India.

The Rajya Sabha is the upper house of the Parliament of India and represents the states and union territories of the country. It is composed of members who are elected by the members of the State Legislative Assemblies. The Rajya Sabha has a total of 245 members, out of which 233 are elected by the Legislative Assemblies of the States and Union territories, while the remaining 12 members are nominated by the President of India.

Now, let's discuss why the Rajya Sabha is presided over by a non-member, who is the Vice-President of India.

**Role of the Vice-President in Rajya Sabha:**
1. Chairperson: The Vice-President of India serves as the ex-officio Chairman of the Rajya Sabha. As the Chairman, the Vice-President presides over the sessions of the Rajya Sabha and ensures that the proceedings are conducted in a fair and orderly manner.
2. Casting Vote: In case of a tie on any matter being voted upon, the Chairman, i.e., the Vice-President, has a casting vote. This means that the Chairman can cast an additional vote to break the tie and decide the outcome.
3. Authority and Control: The Vice-President has the authority to maintain order in the Rajya Sabha and can take disciplinary action against members who violate the rules and decorum of the house.
4. Representing the House: The Vice-President represents the Rajya Sabha in its relations with the President of India and other authorities.

**Reasons for a non-member presiding over Rajya Sabha:**
1. Neutrality: The decision to have a non-member, i.e., the Vice-President, as the presiding officer of the Rajya Sabha ensures impartiality and neutrality. As the Vice-President represents the entire nation, he is expected to be unbiased while conducting the proceedings of the house.
2. Balance of Power: The presence of a non-member as the presiding officer helps to balance the power dynamics in the Rajya Sabha. Since the members of the Rajya Sabha are elected by the State Legislative Assemblies, having a non-member as the Chairman ensures that there is no conflict of interest between the presiding officer and the members.
3. Constitutional Provision: The Constitution of India, under Article 64, provides for the Vice-President to be the ex-officio Chairman of the Rajya Sabha. This provision was made to establish a separate identity for the Rajya Sabha and to ensure its independence from the Lok Sabha.

In conclusion, the Rajya Sabha is presided over by a non-member, the Vice-President of India, to maintain neutrality, balance of power, and to adhere to the constitutional provisions.