The correct answer to this question is D) Development and spread of Christianity.
The Pax Romana set the stage for the development and spread of Christianity.
The Pax Romana establishes stability throughout the Mediterranean world and culture flourished. The Pax Romana was a period in ancient Roma where the political, economic, and social conditions in the Roman Empire were good to establish relative peace and harmony in the Roman territories. It lasted 200 hundred years, from the beginning of emperor Augustus reign in 27 BCE to 14 CE. The aim of this and other emperors of the time was to establish a period of stability, growth peace, flourishment of the arts, and keeping the extension of the territories as part of the expansion of Rome.