The correct answer is (c) Committee on Welfare of SCs and STs.
A Standing Committee of Parliament is a permanent committee of Parliament that is constituted at the beginning of each Parliament. There are 21 Standing Committees of Parliament, each of which is responsible for a different area of government. The Committee on Welfare of SCs and STs is not a Standing Committee of Parliament. It is a Special Committee of Parliament that is constituted to examine a specific issue or bill.
The Committee on Public Accounts is a Standing Committee of Parliament that is responsible for examining the accounts of the government. The Estimate Committee is a Standing Committee of Parliament that is responsible for examining the government’s budget. The Committee on Public Undertakings is a Standing Committee of Parliament that is responsible for examining the working of public undertakings.