The correct answer is (d) Pakistan.
The Citizenship (Amendment) Act, 2019, is an Act of the Parliament of India which provides for the citizenship of certain classes of illegal migrants who entered India on or before 31 December 2014 from Afghanistan, Bangladesh and Pakistan, and who are Hindus, Sikhs, Jains, Parsis, Buddhists and Christians.
The Act does not apply to illegal migrants from Pakistan. This is because Pakistan is a Muslim-majority country and the Act is intended to provide citizenship to religious minorities who are facing persecution in their home countries.
The Act has been controversial, with some people arguing that it is discriminatory and that it violates the secular principles of the Indian Constitution. However, the government has defended the Act, saying that it is necessary to protect religious minorities from persecution.