Option 1, "Demands for Grants Committee," is not a Parliamentary Committee. The other options, 2, 3, and 4, namely "Committee on Public Accounts," "Committee on Public Undertakings," and "Committee on Estimates," respectively, are all Parliamentary Committees.

Parliamentary Committees are specialized bodies that are formed by the legislative branch of government to carry out specific functions. They play a crucial role in the oversight, scrutiny, and examination of various aspects of government functioning. These committees facilitate the checks and balances system and ensure transparency and accountability in governance.

The Committee on Public Accounts is responsible for examining public expenditure and ensuring its proper utilization. The Committee on Public Undertakings examines the functioning of public sector undertakings. The Committee on Estimates assesses the financial implications of government policies and programs.

Option 1, "Demands for Grants Committee," is not a recognized Parliamentary Committee. It is possible that this option was mistakenly included or refers to a committee that is not part of the parliamentary structure.