False

The correct answer is False. The speaker is the Presiding officer of the Lok Sabha, not the Rajya Sabha.

Explanation:
The Indian Parliament consists of two houses - the Rajya Sabha (Council of States) and the Lok Sabha (House of the People). Each house has its own Presiding officer.

Rajya Sabha:
The Rajya Sabha is the upper house of the Parliament. It represents the states and union territories of India. The Rajya Sabha is a permanent body and is not subject to dissolution. It consists of a maximum of 250 members, out of which 238 members are elected by the members of Legislative Assemblies of the states and union territories, and the remaining 12 members are nominated by the President of India.

The Presiding officer of the Rajya Sabha is the Vice President of India. The Vice President is elected by an Electoral College consisting of members of both houses of Parliament. The Vice President performs the duties of the Chairman of the Rajya Sabha and presides over its sessions.

Lok Sabha:
The Lok Sabha is the lower house of the Parliament. It represents the people of India. The Lok Sabha is subject to dissolution and new elections are conducted every five years or earlier in case of a premature dissolution. It consists of a maximum of 552 members, out of which 530 members are elected by the people of India through direct elections, and the remaining 22 members are nominated by the President of India.

The Presiding officer of the Lok Sabha is the Speaker. The Speaker is elected by the members of the Lok Sabha from among themselves. The Speaker presides over the sessions of the Lok Sabha, maintains order, and ensures the smooth functioning of the house. The Speaker also represents the Lok Sabha in its relations with the President, the Rajya Sabha, and other authorities.

In conclusion, the Presiding officer of the Rajya Sabha is the Vice President of India, while the Presiding officer of the Lok Sabha is the Speaker. Therefore, the statement that a speaker is the Presiding officer of the Rajya Sabha is false.