What happened following the death of the Buddha?

Buddhism remained strong in India, but did not spread to other regions.

Confucius spread the new faith.

Buddhist missionaries spread the new faith, first to Sri Lanka.

The Indian prince Siddhartha Gautama brought Buddhism to China.

Option C, Buddhist missionaries spread the new faith, first to Sri Lanka, is the right answer.

Explanation:

Siddhartha Gautama founded faith in or around the Sixth Century in the Indian Subcontinent, which came to be known as Buddhism. This faith remained one of the most prominent faiths in East and Southeast Asia. The Four Noble Truths are the most important teaching of Buddha. He has also mentioned an Eight-fold-path for attaining salvation from this world. Following his death, Buddhist missionaries began spreading a new faith, first in Sri Lanka.

C. Buddhist missionaries spread the new faith, first to Sri Lanka

Explanation:

After the death of the Buddha, the faith continued to spread to Sri Lanka, Southeast Asia, and Eastern Asia.