The correct answer is option 'B', Lok Sabha. The confidence or no-confidence motion can only be moved in the Lok Sabha, which is the lower house of the Indian Parliament.

Explanation:

1. Lok Sabha: The Lok Sabha is the lower house of the Indian Parliament and consists of Members of Parliament (MPs) who are elected by the people of India. It is the primary legislative body responsible for making laws and policies for the country.

2. Confidence Motion: A confidence motion is a parliamentary motion in which the members of the Lok Sabha express their confidence or lack of confidence in the Council of Ministers, headed by the Prime Minister. It is usually moved by a member of the opposition party to challenge the government's majority and can lead to the resignation of the government if it fails to win the majority support.

3. No-Confidence Motion: A no-confidence motion is a parliamentary motion in which the members of the Lok Sabha express their lack of confidence in the Council of Ministers. It is also moved by a member of the opposition party and can lead to the resignation of the government if it fails to win the majority support.

4. Role of Rajya Sabha: The Rajya Sabha, which is the upper house of the Parliament, does not have the power to move a confidence or no-confidence motion. Its primary function is to review and suggest amendments to bills passed by the Lok Sabha.

5. Role of Planning Commission: The Planning Commission, which was a non-constitutional and non-statutory body, has been replaced by the NITI Aayog. Its role was to formulate and implement economic and social development plans. However, it did not have the power to move a confidence or no-confidence motion.

6. Role of Estimate Committee: The Estimate Committee is a parliamentary committee that examines the estimates included in the budget. Its role is to ensure the proper utilization of funds allocated for various government schemes and programs. However, it does not have the power to move a confidence or no-confidence motion.

In conclusion, the confidence or no-confidence motion can only be moved in the Lok Sabha, which is the lower house of the Indian Parliament. The Rajya Sabha, Planning Commission, and Estimate Committee do not have the authority to move such motions.