Final answer:
An online community that shares video game strategies through blogs is an example of social media because it allows interaction and community engagement, key characteristics of social media platforms.
Step-by-step explanation:
The type of social media among the following examples is an online community that shares video game strategies through blogs. This platform allows users to interact, discuss and share information, which aligns with the classical definition of social media that includes social networking, bookmarking, social news, media sharing, microblogging and online forum sites.
By contrast an online tutorial demonstrating how to use a software, e-books, and a college textbook, while they all involve the dissemination of information do not include the interactive or community-based aspects that define social media.