Which of the following answer choices best compares the pax romana with the final period of the roman republic?

a. the final period of the roman republic was marked by factional struggles and civil wars, while the pax romana was characterized by peace and the flourishing of roman culture and public works.
b. the return of most political power to the senate that occurred near the end of the roman republic continued into the pax romana and was one of that time's defining features.
c. like the pax romana, the final period of the roman republic was characterized by a series of harsh military campaigns throughout rome's area of influence.
d. the influence of greek culture and institutions, which began during the final period of the roman republic, continued throughout the pax romana.