To win a prize is my ambition.` The underlined part of the sentence is a/an-
adjective phrase
noun phrase
adverb phrase
conjunctional phrase
Explanation:
Correct Answer is: noun phrase
When a group of words put together and works as noun is called noun phrase. `To win a prize` এটি বাক্যে noun এর কাজ করছে তাই এটি noun phrase.