Question

what does the word dominion mean in this sentence? in alliance with the comanches they the kiowa held dominion in the southern plains for a hundred years supervision territory authority prevalence

Explanation:

The word "dominion" means sovereignty or control over a territory. In the context of the sentence, the Kiowa held control (authority) over the southern Plains in alliance with the Comanches. "Supervision" is more about overseeing, "territory" is the land itself (not the control), and "prevalence" is about being widespread. "Authority" (control/sovereignty) fits best.

Answer:

C. authority