If the President of India exercises his power as provided under Article 356 of the Constitution in respect of a particular State, then

1. The question asks about the consequences when the President of India exercises his power under Article 356 (President's Rule) in a State. 2. Option (A) is incorrect. When President's Rule is imposed, the State Assembly may be suspended or dissolved. Dissolution is not automatic; suspension is also a possibility. 3. Option (B) is correct. Article 356(1)(b) explicitly states that the President may declare that the powers of the Legislature of the State shall be exercisable by or under the authority of the Parliament. 4. Option (C) is incorrect. Suspension of Article 19 (Protection of certain rights regarding freedom of speech, etc.) occurs during a National Emergency proclaimed on grounds of war or external aggression (under Article 358), not necessarily under Article 356. 5. Option (D) is incorrect. While the President assumes executive powers, the legislative powers are typically delegated to the Parliament, as stated in option (B). Parliament may further delegate the power to make laws for the State to the President (President's Acts), but the primary transfer of legislative authority is to Parliament.