Answer:
The best definition of a phrase is:
A group of words without a subject and a verb; if removed, the sentence meaning is not affected.
Step-by-step explanation:
A phrase is a collection of words that work together to convey a specific meaning, but it does not contain a subject and a verb necessary to form a complete sentence. Phrases often function as a single unit within a sentence, adding additional information or modifying other parts of the sentence. While the presence or absence of a phrase may affect the emphasis or clarity of a sentence, its removal typically does not alter the overall meaning of the sentence.