The underlined phrase "frustrated by the woman's response" is used as a participle phrase in the sentence. It provides additional information about the emotional state of the Border guard as he repeated his question.
the options are
as an adjective
as a noun
as an adverb
In this case, the underlined phrase "frustrated by the woman's response" is used as an adjective. It describes the emotional state of the Border guard.
In the sentence "frustrated by the woman's response" is used as a participial phrase. Participial phrases are verb phrases that act as adjectives in a sentence, providing additional information about a noun or pronoun. In this case, the phrase "frustrated by the woman's response" describes the state or emotion of the Border guard. It tells us why the Border guard repeated his question: because he was frustrated by the woman's response. By using a participial phrase, the author provides more context and adds descriptive details to the sentence.
