The correct answer is (b).
Article 224 of the Constitution of India empowers the President to appoint an acting Chief Justice of a High Court in the following cases:
- If the office of the Chief Justice of a High Court is vacant;
- If the Chief Justice is unable to perform the duties of his office due to illness or absence; or
- If the Chief Justice is disqualified from holding office.
The President can appoint an acting Chief Justice from among the judges of the High Court or from among the judges of any other High Court. The acting Chief Justice holds office until the vacancy in the office of the Chief Justice is filled or until the Chief Justice resumes his duties, whichever is earlier.
Article 223 of the Constitution of India deals with the appointment of judges of the High Court. Article 224-A of the Constitution of India deals with the appointment of additional judges of the High Court. Article 225 of the Constitution of India deals with the salaries, allowances, and privileges of the judges of the High Court.