Upon the Roman emperor’s acceptance of Christianity, how did the religion’s status change?

Christianity was made the empire’s official religion.
Christianity immediately spread around the world.
Christianity became legal to practice.
Christianity developed uniform beliefs.

Question

Upon the Roman emperor’s acceptance of Christianity, how did the religion’s status change?

Christianity was made the empire’s official religion.
Christianity immediately spread around the world.
Christianity became legal to practice.
Christianity developed uniform beliefs.

anonymous · Answer

Christianity became especially popular and practiced after Rome's acceptance of the religion and it's spread was massive due to Rome's cultural persuasiveness.

anonymous · Answer

So I believe the answer to be B.

anonymous · Answer

A religious heretic was known as 

a Catholic priest charged with converting others to Catholicism.
a person who tried to convert others to his or her religion.
an organization that punished those who did not follow Catholicism.
a person who held beliefs going against the teachings of a church.

im struggling with the question. i googled the definition but its not making much sense at all. @Khirro

anonymous · Answer

In context, "heretic" is usually applied within a religious sense.
I believe since we're dealing with the Roman Empire and the Church and since "heretic" is usually defined as someone who values their beliefs over society and laws, that they were going against the beliefs of the Church.