Explanation
Option (a) is incorrect: Amoghavarsha I (814-878 CE) was one of the greatest rulers of the Rashtrakuta Empire, he was known for his negotiations and peace treaty with the Gangas and other southern powers and for his immense contributions to literature. He authored Kavirajamarga, the earliest known Kannada literary work, and shifted the capital to Manyakheta.
Option (b) is correct: Dantidurga is considered to be the founder of the Rashtrakuta Empire in the Deccan region of India, during the late 8th century. He overthrew the rule of the Chalukya dynasty and laid the foundation for what became a powerful empire in India.
Option (c) is incorrect: Dhruva was also a ruler of the Rashtrakuta Empire, notably crushing the revolt in Gujarat and effectively dealing with invasions from the Arab world.
Option (d) is incorrect: Krishna I was another significant ruler from the Rashtrakuta dynasty, known particularly for the construction of the Kailasanatha Temple at Ellora.
The Rashtrakutas were a powerful dynasty that ruled large parts of Deccan India between the 8th and 10th centuries CE. Their empire was founded by Dantidurga in 753 CE after overthrowing the Chalukyas of Badami. The Rashtrakutas had their capital at Manyakheta (modern Malkhed, Karnataka).