Answer:
The best meaning for predominate is letter C) have more power.
Step-by-step explanation:
To dominate means to have power, to rule or govern over people or land. The prefix pre- means "before". Thus, being predominant, or predominating, would literally mean something or someone has had power since earlier in time.
With time, the word has come to mean "to be the stronger element" or "to have numerical superiority". Therefore, when the sentence claims that one religious group predominates, it means that this one group has more power than others, has more followers or members.