The correct answer is: C. She said that her brother was expected to be back today.
The sentence “She said, ‘My brother is expected to be back today'” is a direct quote. In a direct quote, the speaker’s exact words are enclosed in quotation marks. The verb “said” indicates that the speaker is reporting what someone else said. In this case, the speaker is reporting that the woman said that her brother was expected to be back today.
The other options are incorrect because they do not accurately reflect the speaker’s words. Option A, “She said that her brother was expected to be back that day,” is incorrect because the speaker did not say “that day.” Option B, “She said her brother was expected to be back today,” is incorrect because the speaker did not use the pronoun “her.” Option D, “She said that her brother was expected to be back this day,” is incorrect because the speaker did not use the word “this.”
In conclusion, the correct answer is: C. She said that her brother was expected to be back today.