The correct answer is (a). Annamacharya, a 15th-century saint-composer, is revered for his devotional songs dedicated to Lord Venkateswara. He is considered to be one of the greatest Telugu poets and composers of all time. His songs are known for their simple yet beautiful lyrics, which express his deep devotion to God. They are also known for their intricate musical structure, which is based on the traditional Telugu raga system. Annamacharya’s songs have been widely translated into other languages and are sung by people all over the world.
(b) is incorrect because Annamacharya is not known for his classical music compositions. He is known for his devotional songs, which are based on the traditional Telugu raga system.
(c) is incorrect because Annamacharya is not known for his folk songs. He is known for his devotional songs, which are based on the traditional Telugu raga system.
(d) is incorrect because Annamacharya is not known for his experimental musical forms. He is known for his devotional songs, which are based on the traditional Telugu raga system.