In the century before the birth of christ, most romans

Since you provided no options, I will assume that you are looking for one way to continue this sentence and here it is:

 In the century prior to the birth of Christ, majority of the population in the Roman empire believed in the Greek and Roman understandings of mythological gods. These included the likes of Zeus and others, which each held a specific significance in the material world.

Gun but i don’t know for sure