Option 1 is the correct answer. According to Article 352 of the Indian Constitution, when a proclamation of emergency is issued on account of war or aggression, it requires approval from the Parliament within one month. This means that the President, after consulting the Council of Ministers, can declare a state of emergency during times of war or external aggression. However, this proclamation must be ratified by the Parliament within one month. If the Parliament fails to give its approval within this timeframe, the emergency ceases to exist. It is important to note that the approval from the Parliament is necessary to ensure the checks and balances of power and prevent misuse or prolonged imposition of emergency powers.