The word that correctly completes the sentence is "complement", which is categorized as a noun.
A verb is often an action; on the other hand, a noun describes a concept. Due to this, nouns are often used after adjectives, while verbs are used after subjects.
The best word is the noun "complement" because the word that should be completed is placed right after the adjective "lovely."
Note: This question is incomplete because the sentence is missing; here is the missing sentence:
The bronze statue was a lovely __________ to her collection
Learn more about nouns in https://brainly.com/question/134274
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