Answer: The bolded words form an (C.) adjective phrase.
Explanation: An adjective phrase is a group of two or more words that includes an adjective and modifies a noun that is usually placed before the phrase. In the sentence provided,<u> "about Native American folklore" is an adjective phrase because it is modifying the noun "article" and providing more information about it</u>. Moreover,<u> it is made up of the adjective "Native American"</u>, which has been used to premodify the noun "folklore".
