Article 9 of the Indian Constitution deals with

The correct answer is Option (3) → Persons who voluntarily acquire foreign citizenship

Part II of the Constitution, Articles 5 to 11, deals with citizenship. Article 9 says that a person who has voluntarily acquired the citizenship of a foreign State shall not be a citizen of India under Articles 5, 6 or 8. India does not allow dual citizenship, so taking up another country’s citizenship ends Indian citizenship.