Read the following excerpt from a student essay. How can the writer best improve his or her organization?
For several reasons, plagiarism is a major issue in schools today. Part of the problem is that many students don't even know what plagiarism means exactly. For teachers, it can be a challenge to spot plagiarism. As a result, several Internet services have been created to help teachers detect copied material by showing the sources of passages that aren't original. Students need to know that any act of using another person's ideas or words without giving credit to that person is plagiarism. They must understand how serious the consequences can be. People who plagiarize may have their reputation and credibility destroyed, and they may be in violation of copyright laws. It is important for students and teachers to work together to prevent plagiarism.
A. by making a general statement before giving examples
B. by removing text unrelated to the main idea
C. by discussing one topic before moving on to another
Select the correct answer from the provided options and reply with the letter associated with it.

C