Explanation
In India, citizenship can be lost through all three ways: renunciation, deprivation, and termination.
A. Renunciation: A person who is an Indian citizen by birth, registration, or naturalization can renounce their citizenship by making a declaration in the prescribed form. The person must be of full age and capacity and should have voluntarily acquired the citizenship of another country.
B. Deprivation: The Indian government can deprive a person of their citizenship if they have obtained it by fraud, false representation, or concealment of any material fact. A person may also be deprived of their citizenship if they have been sentenced to imprisonment for a term of not less than two years within five years of obtaining citizenship.
C. Termination: The citizenship of a person can be terminated if they voluntarily acquire the citizenship of another country. However, this does not apply to a person who acquires the citizenship of a foreign country by virtue of marriage to a foreign national.
Thus, the correct answer is D: All of these.