What was the major appeal of Buddhism? It provided a deity to worship.
It was practiced by millions of people.
It was an important part of Chinese society.
It was believed to bring about an end to suffering

It was believed to bring about an end to suffering

Explanation:

After Siddhartha Gautama gained enlightenment and became the Buddha, he preached to many to make them understand that suffering existed in this world but there was also a way to end it, following the Eightfold Path.

In a world that was beset with suffering, the people readily took this message in because they wanted their suffering to end and they believed that Buddhism could make this happen.

d: their own individual powers within the new goverment

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.