Which is not a form of media? A.
an article in a magazine
B.
a blog on the Internet
C.
a commercial advertisement
D.
a private counseling session with your doctor

D.  a private counseling session with your doctor

Explanation:

The term "medium" (the singular form of "media") is defined as "one of the means or channels of general communication, information, or entertainment in society, as newspapers, radio, or television."

Modern media comes in many different formats, including print media (books, magazines, newspapers), television, movies, video games, music, cell phones, various kinds of software, and the Internet. Each type of media involves both contents, and also a device or object through which that content is delivered.

It explains that letter D.  a private counseling session with your doctor is not a form of media

avoiding recreational drugs instead of using them

be confident on yourself. ignore such fools and move on ; )