Directions: Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select No improvement. This is a class who is expected to do exceptionally well in the quiz next week.

Explanation

The correct answer is 'Which is expected to do' Key Points The given phrase is to be replaced with 'Which is expected to do' According to grammar , Whenever we have an antecedent and it is a thing or a group, then use 'which' as a relative pronoun. Example: She belongs to a great organization, which specializes in saving endangered species. In the given sentence, 'who' is incorrect as 'who' is used for the antecedents which are nouns. Let's see an example- I went over to start up a conversation, asking her who she knew at the party. So the correct sentence is-This is a class which is expected to do exceptionally well in the quiz next week.