The event that sparked the persecution against Christianity beginning in the year 285 was when the emperor Diocletian viewed Christians as displeasing the Roman gods and goddesses.
During the year 285, the Emperor Diocletian split the Roman Empire into two halves (Western Roman Empire & Eastern Roman Empire) when he reigned in the Eastern Empire while Maximian as Augustus reigned the Western half.
But in the 4th century, he created the Great Persecution which are laws that banned Christians from holding positions of power, banning the gathering of churches and Christian literature, as well as punishing anybody who failed to worship traditional Roman gods.
In 313 AD, the Edict of Milan was published by Emperor Constantine, abolishing the persecution of Christians. This occurred after the between the Eastern and Western halves of the Empire, and it was said that Constantine saw a vision of a cross of light, as well as having a dream of Jesus Christ commanding him to use the cross as his symbol.
After the battle of the Milvian Bridge, he ordered his soldiers to put the cross symbol on their shields, they totally routed the enemies, which led to Constantine abolishing laws against Christianity and putting into law the Edict of Milan, which saw to the legalization of Christianity.
Therefore, the Option A is correct.
Read more about emperor Diocletian
brainly.com/question/27953720
#SPJ1
