Step 1: Concept
Ramanataka Keertana is a well-known composition in Carnatic music, and identifying its composer helps understand the history and evolution of this genre.
Step 2: Meaning
A keertana is a devotional song in Carnatic music dedicated to Lord Rama. The term "Ramanataka" specifically refers to compositions related to the life and deeds of Lord Rama.
Step 3: Analysis
To determine the correct composer, we need to consider the historical context and contributions of each listed individual:
Gopalakrishna Bharati is known for his contribution to Hindustani classical music.
Narayana Teertha was a 16th-century composer who wrote in Telugu language.
Koteeswara Iyer composed in various languages including Sanskrit, Tamil, and Telugu.
Arunachala Kavirayar is renowned for his contributions to Carnatic music, particularly known for his keertanas dedicated to Lord Rama.
Given the specific nature of Ramanataka Keertana as a composition dedicated to Lord Rama, it aligns with the style and themes associated with Arunachala Kavirayar's work. Historical records and scholarly consensus support that Arunachala Kavirayar is indeed the composer of this keertana.
Step 4: Conclusion
Arunachala Kavirayar composed Ramanataka Keertana, making him the correct answer to the question.
Final Answer: (D)