51.
The answer is: A
Explanation
The correct option is A: person.
According to Article 300A of the Constitution of India, no person shall be deprived of his property save by authority of law.
The term "person" includes both citizens and non-citizens, as well as natural and juristic persons, such as corporations, trusts, societies, etc. The article protects the right to property of every person, regardless of their nationality, citizenship, or legal status. The article also implies that the state can only acquire or take away the property of a person by following a valid law that is just, fair, and reasonable. The article does not guarantee any compensation or public purpose for the acquisition of property, unlike the repealed Article 31, which was a fundamental right. The article also does not confer any right to approach the Supreme Court directly for the violation of the right to property, but only the High Courts under Article 226.