Romans were tolerant of other peoples' religions unless those religions

a. worshipped Yahweh.

b. were sects of Judaism.

c. threatened public order or morals.

d. worshipped the state gods and emperors.

The correct answer for this question is "d. worshiped the state gods and emperors." Romans were tolerant of other people's religions unless those religions worshiped the state gods and emperors. During the early ages of Roman, they have a lot of gods that are counterpart of those of the Greeks.