Explanation:

- In the context of the Indian Constitution, Article 370 was designed to ensure special status and autonomy for Jammu and Kashmir.

- Option 1 (1952): This year is not when Article 370 was adopted. It was primarily significant for political changes related to Kashmir but not the adoption of the article.

- Option 2 (1949): This is the correct year when Article 370 was adopted, ensuring special status for Jammu and Kashmir in the Indian Constitution.

- Option 3 (1961): This year does not relate to the adoption of Article 370. It focuses more on legislative changes in India but not this specific article.

- Option 4 (1950): Although the Indian Constitution came into effect this year, Article 370 had already been adopted in 1949.