I have been receiving harassing calls from homework help recently.

"I helped her scan the code out of kindness, but unconsciously leaked my personal information. Since then, I have been receiving harassing calls and marketing advertisements, which have had an impact on my daily life. " Ms. Zhao's experience tells us that we should strengthen our self-protection awareness, improve our self-protection ability and pay attention to protecting our privacy in our daily life. No, saying "refuse to help others" is too absolute. No, communication is very important. You can't shut yourself off.

So choose: C.