Correct Answer:
D. Siddhartha Gautama
Siddhartha Gautama is universally recognized as the founder of Buddhism. He was a spiritual teacher in ancient India who, through profound meditation and insight, attained enlightenment and became known as the Buddha. His teachings form the core principles of Buddhism.
- Confucius was a Chinese philosopher who founded Confucianism, a system of ethical, philosophical, and religious thought.
- Mahavira was the 24th and last Tirthankara of Jainism, a distinct religion from Buddhism.
- Ashoka was a powerful Mauryan emperor who became a devout Buddhist and played a crucial role in spreading the religion, but he did not found it.