The conversational maxim that the professor violates is the relation. It is because professor discusses topics that are not related to the topic that she is going to discuss, which is why she is violating the relation. She focus her attention of discussing events that is happening on her life rather than focusing on teaching the topic that she should be teaching such as the tangents.
Hello. You have not submitted the text to which this question refers. This makes it impossible for your question to be answered. However, I will try to help you in the best possible way.
It is only possible to answer this question by reading the two texts. Also, this is a personal question so first of all, you should reflect on what you think about the dangers that social media can offer to users. Do you think social media can influence you incorrectly? do you think social media can impose negative standards on society? Do you think that social media can promote exaggerated exposure? These are some concepts that you can reflect on to create your opinion about the dangers that social media can cause.
Then, you should read both texts and pay attention to how the authors approach these dangers and which author managed to present an argument that most closely resembles the opinion you have on this subject.
Therefore, you must answer this question by showing how you and this author present similar arguments and opinions.