Which of the following is not technically a form of mass media?

A) Blog
B) Telephone
C) Text messaging
D) Social media

Text Messaging

The act of sending brief, electronic messages between two or more mobile phones or fixed or portable devices over a phone network.

Social Media

Platforms and technologies that enable users to create, share, or exchange information, ideas, and content in virtual communities and networks.

Telephone

A telecommunications device designed to transmit and receive sound, primarily human voice, across distances.