Answer: The choice that best fixes the error in the sentence is option C: "According to a study by Seventeen Magazine, 57 percent of high school students say they have been victims of cyberbullying."
Step-by-step explanation:
Option C improves the sentence by providing specific information about the study. It mentions the source of the study (Seventeen Magazine) and specifies that the study was conducted on high school students. This addition of details makes the sentence more precise and credible.
Option A is incorrect because it does not provide any specific information about the study or the percentage of students affected by cyberbullying.
Option B is incorrect because it only mentions the percentage of students affected by cyberbullying but does not provide information about the source of the study or the demographic being studied.
Option D is incorrect because it does not provide any specific information about the study or the percentage of students affected by cyberbullying.
Therefore, the correct answer is C. Hope this helps!!