Question

is the group of words in bold a phrase or a clause?
the elevated flower beds that display nicks prize roses are quite striking.
phrase clause
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Explanation:

A clause has a subject and a predicate (verb + related elements), while a phrase does not. The bolded "are quite striking" contains the subject (implied or part of the main clause structure) and the predicate "are quite striking" (verb "are" with description). Wait, actually, "are quite striking" is a clause because it has a verb ("are") and expresses a complete thought within the sentence's structure (it's the predicate part of the main clause, with "the elevated flower beds..." as the subject). A phrase lacks a subject - predicate combination. So "are quite striking" is a clause.

Answer:

clause