is the group of words in bold a phrase or a clause? the earth is not a perfect sphere but rather an oblate…

is the group of words in bold a phrase or a clause? the earth is not a perfect sphere but rather an oblate sphere because it is flattened at the poles and enlarged at the equator. phrase clause
Answer
Brief Explanations:
A clause has a subject ('it') and a predicate ('is flattened at the poles and enlarged at the equator'). The bold - part meets this criterion. A phrase does not have a subject - predicate combination.
Answer:
clause