Which source would be most appropriate for researching the question "how does social media affect personal relationships? " a blog post discussing the blogger's large number of followers a journal article by a psychologist who is studying social media a social media site showing the process of connecting to other users a wiki page discussing appropriate interactions on the internet

The most appropriate sources that can be used is a journal article by a psychologist who is studying social media a social media site showing the process of connecting to other users.

In conducting research, the researchers must cite credible and valid sources. A blog post and a Wikipedia page are generally unacceptable sources to use if there are other more credible and valid sources available, which in this case is the journal article.  

a journal article by a psychologist who is studying social media

Explanation:

one method is to click on the icon.