The Constitution of India primarily applies to Meghalaya, but with certain exceptions outlined in:

Article 370
Article 371
Article 35A
The Sixth Schedule

The correct answer is: d) The Sixth Schedule.

The Sixth Schedule to the Constitution of India is a special provision for the administration of tribal areas in the states of Assam, Meghalaya, Tripura and Mizoram. It provides for a system of autonomous district councils with wide-ranging powers over land, forests, education, health, and other matters. The Sixth Schedule also guarantees certain rights to the tribal peoples of these states, such as the right to conserve their land and resources, and the right to practice their own customs and traditions.

Article 370 is a special provision in the Constitution of India that grants a certain degree of autonomy to the state of Jammu and Kashmir. It allows the state to have its own constitution, flag, and currency, and it prohibits non-residents from owning land in the state.

Article 371 is a special provision in the Constitution of India that grants a certain degree of autonomy to the states of Nagaland, Manipur, and Sikkim. It allows these states to have their own legislatures and governments, and it prohibits non-residents from owning land in the state.

Article 35A is a provision in the Constitution of India that grants special status to the state of Jammu and Kashmir. It allows the state to define its own permanent residents, and it prohibits non-residents from owning land in the state.

The Sixth Schedule is a more detailed and specific provision than the other three options. It provides for a system of autonomous district councils with wide-ranging powers, and it guarantees certain rights to the tribal peoples of the states of Assam, Meghalaya, Tripura and Mizoram.