Explanation:

• - Option 1: The Chief Justice of India doesn't discharge the duties of a state Governor. The role is at a national level, not state-specific.
• - Option 2: The President appoints an acting Governor. However, it’s common for the President to choose the Governor of a neighboring state as the acting Governor.
• - Option 3: The Senior-most judge of the Supreme Court doesn't take over the duties of a Governor. The judiciary operates independently of these executive roles.
• - Option 4: The Chief Justice of the High Court might temporarily take over some functions but doesn't typically act as a full Governor.
• Correct Answer: Option 2
• If the position of a Governor becomes vacant, the President usually appoints an acting Governor, frequently choosing a neighboring state's Governor for this role.
• The Chief Justice of the High Court discharges the duties of the office of a Governor if it falls vacant due to death or resignation of the Governor.