In which sentences should the pronoun who be replaced with whom to reflect correct usage? Select the two correct answers.

Dorothy is a professional pastry chef who can bake a great Chantilly tart.
The water from the faucet has turned brown, but I'm not sure who to call about it.
Who do you think should be the next president of the science club?
Bryan, who loves playing soccer, was disappointed when he was cut from the team.
Who wants to help clean the pool so that it will be ready when summer begins?

The pronoun "who" should be replaced with "whom" in the following sentences:

1. The water from the faucet has turned brown, but I'm not sure whom to call about it.
2. Who do you think should be the next president of the science club?

To determine whether to use "who" or "whom," you should consider whether the pronoun is functioning as a subject or an object in the sentence.

The two sentences in which "who" should be replaced with "whom" are:
1. The water from the faucet has turned brown, but I'm not sure whom to call about it.
Here, "whom" is the object of the verb "call."

2. Who do you think should be the next president of the science club?
In this sentence, "who" is the subject of the verb "do you think," so it should not be replaced with "whom."

The other sentences use "who" correctly because it functions as the subject in those sentences.

The water from the faucet has turned brown, but I'm not sure whom to call about it.

Bryan, who loves playing soccer, was disappointed when he was cut from the team.