The parliament can legislate on the subjects in the State List if the
- President issues an order authorizing it to do so
- Supreme Court gives authority to the Parliament in this regard
- Rajya Sabha passes a resolution by two-thirds of its members present and voting, declaring it expedient to legislate on a State matter in the national interest.
- Prime Minister issues a special order
Article 249(1) defines the power of the Parliament to legislate with respect to matter in the State List in the national interest.
The correct option is C.