Under which Article the President of India can impose an Emergency on…

The correct answer is Option 3  - 352

The President of India can impose an Emergency on grounds of internal disturbances and external threats through article 352.

On 25 June 1975, the government declared that there was a threat of internal disturbances and therefore, it invoked Article 352 of the Constitution. Under the provision of this article the government could declare a state of emergency on grounds of external threat or a threat of internal disturbances. The government decided that a grave crisis had arisen which made the proclamation of a state of emergency necessary.

Note: After the 44th amendment act of 1978, the grounds for declaring a national emergency are restricted to:
- War or external aggression
- Armed rebellion