Answer:
Adjectives are modifiers that add information to a noun or pronoun.
Ex. That crazy person won the quiz bee. Crazy adds information to the noun "person"
Themselves
This reflexive pronoun is the best fit because it needs to agree with the antecedent--in this case "scholars". Because scholars is plural, the pronoun also needs to be plural. Themselves is a plural reflexive pronoun, so it will properly complete the sentence.
to describe the origins of the Kiowa people
