Answer:
The option that is not a part of speech is:
B. sentence
Explanation:
It is important to understand the parts of speech to be able to correctly determine how a word functions in a sentence, not just grammatically, but also in meaning. It is also important to keep in mind that the same word may function as more than just one part of speech, according to the context. There are eight parts of speech: noun, pronoun, verb, adjective, adverb, preposition, conjunction, and interjection. As we can see, option B. sentence is not included. As a matter of fact, a sentence is usually the result of the parts of speech being in use.
The correct answers are to study medicine; adverb.
Infinitive phrases are relatively easy to spot - they begin with the word to, are followed by the main verb, and the rest of the words closely connected in meaning. In the example above, the infinitive phrase is <em>to study medicine - </em>we have the word <em>to, </em>the verb <em>study, </em>and the object <em>medicine. </em>(Even though the phrase <em>to college </em>also begins with <em>to, college </em>is not a verb but rather a noun - this is a prepositional phrase).
The use of the infinitive phrase is adverbial - it means that it can tell us the time, place, manner, etc. of the verb, of the action being performed. In the example above, we see the reason why <em>Candice went to college. </em>
