Why did Buddhism start declining in India in the early medieval times? 1. Buddha was by that time considered as one of the incarnations of Vishnu and thus became a part of Vaishnavism. 2. The invading tribes from Central Asia till the time of the last Gupta king adopted Hinduism and persecuted Buddhists. 3. The Kings of the Gupta dynasty were strongly opposed to Buddhism. Which of the statements given above is/are correct?

The correct answer is A because the absorption of the Buddha into the Hindu pantheon was a major factor in the decline of Buddhism in India. By the early medieval period, the Bhakti movement and Puranic Hinduism became highly popular. To counter the influence of Buddhism, Brahmanical scholars and texts like the Puranas identified Buddha as the ninth avatar of Lord Vishnu. This assimilation blurred the distinct identity of Buddhism, as many of its followers and practices were gradually integrated into Vaishnavism and broader Hindu traditions.

Options referring to 2 and 3 are not provided in your prompt, but in the standard UPSC question, those options typically mention the invasion of tribes from Central Asia or the persecution of Buddhists by kings. While those factors occurred, they were not the primary or universal reasons for the internal decline of the faith across the subcontinent. The internal shift where Buddhism lost its unique philosophical standing due to its integration into the fold of Vaishnavism remains the most significant socio-religious reason among the given choices.