The sentence that is the underlined phrase an adjective prepositional phrase is "The pyramid of Khufu stands in Giza near two other large pyramids."
Explanation:
An adjective prepositional phrase follows a noun or pronoun that they are modifying. Then the sentence " The pyramid of Khufu stands in Giza near two other large pyramids." has an adjective prepositional phrase that is "near two other large pyramids" where "near" is the preposition and "two other large pyramids" the noun that makes the prepositional phrase, before this we have the noun that is modified which is "Giza"
Extraneous means irrelevant or unneeded. essential means absolutely needed. so they are opposites. The other opposites in that set are mediocre (meh average) and extraordinary(amazing) D
