Which one of the following is not a Constitutional Commission of

Which one of the following is not a Constitutional Commission of India?

The National Commission for Scheduled Castes
The National Commission for Scheduled Tribes
The National Commission for Backward Classes
The National Commission for Women
This question was previously asked in
UPSC NDA-1 – 2022
The National Commission for Women (NCW) is a statutory body, not a Constitutional Commission. It was established by an Act of Parliament, the National Commission for Women Act, 1990, in 1992.
Constitutional Commissions are bodies explicitly mentioned and established by the Constitution of India. Statutory bodies are created by an Act passed by the Parliament or a State Legislature.
The National Commission for Scheduled Castes (Article 338), the National Commission for Scheduled Tribes (Article 338A), and the National Commission for Backward Classes (Article 338B) are all Constitutional Commissions. Article 338B was inserted by the 102nd Amendment Act, 2018, giving constitutional status to the National Commission for Backward Classes.