The correct answer is option 4, Article 11 of the Indian Constitution. This article empowers the Parliament to regulate the right of citizenship in India. It gives the Parliament the authority to make laws regarding the acquisition and termination of citizenship. This means that the Parliament has the power to determine who is considered a citizen of India and can pass laws regarding the rights and privileges of Indian citizens. It is an important article as it helps in defining the criteria and processes for acquiring citizenship, as well as the circumstances under which citizenship can be terminated. It allows the Parliament to ensure that the right of citizenship is regulated and protected in accordance with the needs and requirements of the country.