Solution

 Under the Citizenship Act of 1955, the Central Government may, on an application, register as a citizen of India any person (not being an illegal migrant) if he belongs to any of the following categories, namely:-

• A person of Indian origin who is ordinarily resident in India for seven years before making an application for registration;
• A person of Indian origin who is ordinarily resident in any country or place outside undivided India;
• A person who is married to a citizen of India and is ordinarily resident in India for seven years before making an application for registration;
•  minor children of persons who are citizens of India;
• A person of full age and capacity whose parents are registered as citizens of India;
• A person of full age and capacity who, or either of his parents, was earlier citizen of independent India, and is ordinarily resident in India for twelve months immediately before making an application for registration;
• A person of full age and capacity who has been registered as an overseas citizen of India cardholder for five years, and who is ordinarily resident in India for twelve months before making an application for registration.