Step 1: Chief Election Commissioner.
The Chief Election Commissioner is appointed by the President of India under Article 324 of the Constitution. Hence, I–C is correct.
Step 2: Deputy Chairman of Rajya Sabha.
The Deputy Chairman of the Rajya Sabha is elected by the members of the Rajya Sabha from amongst themselves. Hence, II–A is correct.
Step 3: Speaker of Lok Sabha.
The Speaker of the Lok Sabha is elected by the members of the Lok Sabha. Hence, III–B is correct.
Step 4: Chairman of Public Accounts Committee.
The Chairman of the Public Accounts Committee is appointed by the Speaker of the Lok Sabha. Hence, IV–D is correct.
Step 5: Conclusion.
The correct matching is I-C, II-A, III-B, IV-D. Therefore, option (A) is the correct answer.