why does plagiarism have a red x next to my paper when trying to check it?
3 answers
I bet the text in your paper has been found in another source document not written by you.
Are you clear on what plagiarism is and isn't? Let me know if you need explanation or ideas about how to make sure you are nowhere close to plagiarizing in your papers.
Also, do you know one of the easiest ways to find word-for-word sequences of words ... to double-check and make sure nothing that could be called plagiarism shows up in your work?