- 
					 When there is a vacancy in the office of the President and the Vice President at the same time, the office is held temporarily by
- 
                        - a person nominated by both the Houses of Parliament
- the Speaker of Lok Sabha
- the Deputy Chairman of Rajaya Sabha
-  the Chief Justice of India 
 
 
Correct Option: D
The Parliament enacted the “President (Discharge of Functions) Act, 1969” which provides that, in the event of occurrence of vacancy in the office of both the President and the Vice-President, the Chief Justice of India, or in his absence, the seniormost judge of the Supreme Court available shall discharge the functions until a new President is elected. 
 
	