is the group of words in bold a phrase or a clause? an accomplished artist, leonardo da vinci was mesmerized…

is the group of words in bold a phrase or a clause? an accomplished artist, leonardo da vinci was mesmerized by flight and drew many sketches of unconventional and surprisingly modern flying machines. phrase clause
Answer
Brief Explanations:
A phrase is a group of words without a subject - verb combination. "An accomplished artist" has no verb, so it's a phrase.
Answer:
phrase