Final answer:
The factor that did not contribute to the world being ready for Christ to come was Romans worshiped God.
Step-by-step explanation:
Out of the given options, the factor that did not contribute to the world being ready for Christ to come was option D) Romans worshiped God.
During the time when Christ came, Rome was characterized by moral decay and corruption (option A). Additionally, the Roman Empire provided a safe and stable environment (option B) for the spread of Christianity. The widespread knowledge of the Greek language (option C) also facilitated the communication and dissemination of Christian teachings.