Step 1: Understanding the Concept:
South Asian nations have diverse political systems that have evolved significantly since the mid-20th century.
Understanding the specific forms of government is key to analyzing regional stability.
Step 2: Detailed Explanation:
Evaluating the political status of South Asian countries:
- Bhutan (A): Bhutan transitioned from an absolute monarchy to a constitutional monarchy in 2008, where the King remains the head of state but operates within a democratic framework. This statement is correct.
- Maldives (B): The Maldives was a Sultanate until 1968, when it officially abolished the monarchy and became a Republic. This statement is correct.
- Pakistan (C): This statement is historically inaccurate. Pakistan has experienced multiple military coups and periods of martial law since its independence in 1947, and thus has not maintained a "stable" democracy.
Step 3: Final Answer:
Since statements A and B are factually accurate, option (D) is the correct choice.