The Rashtrakutas, a dynasty that ruled over a major portion of India from the 6th to the 10th century CE, patronized Jainism as the religion of choice.

Jainism is an ancient Indian religion that emphasizes non-violence towards all living beings, truth, and non-possession. It was founded by Mahavira in the 6th century BCE and has a strong following in India and parts of Southeast Asia.

Buddhism, on the other hand, was also prominent in ancient India but did not receive as much patronage from the Rashtrakutas. Buddhism, founded by Gautama Buddha in the 5th century BCE, focuses on the pursuit of enlightenment and the cessation of suffering.

Shaivism and Vaishnavism are two major branches of Hinduism. Shaivism worships Shiva as the supreme deity, while Vaishnavism worships Vishnu as the supreme deity. Although both Shaivism and Vaishnavism have had their followers throughout history, they did not receive as much patronage from the Rashtrakutas compared to Jainism.

Overall, the Rashtrakutas showed significant support and patronage towards Jainism, making it the correct answer to the question.