Final answer:
The underlined word in the sentence is 'theatrical,' which is an adjective describing the noun 'family.'
Step-by-step explanation:
The underlined word in the sentence is 'theatrical.' This word is an adjective that describes the noun 'family.' Adjectives provide more information about a noun or pronoun in a sentence. In this case, 'theatrical' tells us that the family is related to or involved in theater.
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