The correct answer is option 'A' - Article 370.

Explanation:
Article 370 of the Indian Constitution granted special autonomous status to the state of Jammu and Kashmir. It provided certain privileges and exemptions to the state, allowing it to have its own constitution, flag, and the power to make laws in all matters except defense, foreign affairs, and communications. However, on August 5, 2019, the special status of Jammu and Kashmir was withdrawn by the Indian government.

Here is the detailed explanation:

- Introduction to Article 370:
Article 370 was incorporated into the Indian Constitution in 1949 with the aim of providing temporary provisions for the governance of the state of Jammu and Kashmir. It granted the state a special autonomous status, allowing it to have its own separate constitution and flag. The provision was intended to provide a framework for the gradual integration of Jammu and Kashmir into India.

- Special Powers and Privileges:
Under Article 370, the Indian Parliament required the concurrence of the state government to apply laws in Jammu and Kashmir, except in matters of defense, foreign affairs, and communications. The state had the power to make its own laws in all other areas, and the Indian Constitution was applicable to Jammu and Kashmir only in a limited manner.

- Withdrawal of Special Status:
On August 5, 2019, the Indian government led by Prime Minister Narendra Modi announced the revocation of Article 370 and the bifurcation of the state of Jammu and Kashmir into two separate union territories - Jammu and Kashmir, and Ladakh. The decision was made through a presidential order and subsequent passage of a resolution in the Indian Parliament.

- Implications of the Withdrawal:
The withdrawal of Article 370 led to significant changes in the governance and administration of Jammu and Kashmir. The state lost its special status and became directly governed by the Indian central government. The separate constitution and flag were abolished, and the state was brought under the direct purview of the Indian Constitution. The move aimed to integrate Jammu and Kashmir more closely with the rest of India and bring about socio-economic development in the region.

In conclusion, Article 370 of the Indian Constitution was invoked to withdraw the special status of Jammu and Kashmir. The provision granted the state its own constitution, flag, and a certain degree of autonomy. However, on August 5, 2019, the Indian government revoked Article 370, leading to the integration of Jammu and Kashmir into the rest of India.