Step 1: Concept
Vadi and Samvadi Swaras: In the context of Indian classical music, a raga's prominent swara is known as Vadi. The Vadi swara plays a crucial role in defining the essence of a raga.
Step 2: Meaning
Vadi (वादि): This term refers to the most important or dominant note in a raga that gives it its unique character and helps in shaping the melody.
Step 3: Analysis
Assertion (A) states that the prominent swara of a raga is called Vadiswara. This statement is correct as per the definition provided above. The Vadi swara indeed holds a significant position within a raga, much like how a king holds an important position in a country.
Reason (R) suggests that Vadi swara can be compared to the king of a country. While this analogy might help in understanding the importance of the Vadi swara, it is not necessarily the correct explanation for why it is called Vadiswara. The term "Vadiswara" is derived from its role as the dominant note rather than any political or social comparison.
Step 4: Conclusion
The assertion (A) accurately describes the concept of the prominent swara in a raga, whereas reason (R), although providing an analogy to explain the importance, does not correctly define why it is called Vadiswara.
Final Answer: (A)