The correct answer is (d).
The Parliament can make laws with respect to a matter in the State list in the national interest, but only with the consent of the Rajya Sabha. The Rajya Sabha has to declare that it would be necessary in the national interest, and a resolution has to be passed by Rajya Sabha by not less than two-thirds of the members present and voting. The legislation could be for the whole or any part of the country.
(a) The Rajya Sabha has to declare that it would be necessary in the national interest. This is correct. The Rajya Sabha has to declare that it would be necessary in the national interest for the Parliament to make laws with respect to a matter in the State list.
(b) A resolution has to be passed by Rajya Sabha by not less than two-thirds of the members present and voting. This is correct. A resolution has to be passed by Rajya Sabha by not less than two-thirds of the members present and voting for the Parliament to make laws with respect to a matter in the State list.
(c) The legislation could be for the whole or any part of the country. This is correct. The legislation could be for the whole or any part of the country.
(d) Only the Rajya Sabha can make laws with respect to a matter in the State list in the national interest. This is incorrect. The Parliament can make laws with respect to a matter in the State list in the national interest, but only with the consent of the Rajya Sabha.