The correct option is 2 and 3 only, as the Parliamentary Committee on Public Accounts comprises not more than 22 members from the Lok Sabha, not 25. It plays a crucial role in ensuring governmental accountability by scrutinizing the appropriation and finance accounts of the government and examining the reports presented by the Comptroller and Auditor General of India. This oversight function is vital for maintaining transparency and financial discipline, aligning with democratic principles and good governance, central to the study of Indian polity in UPSC prelims.