Many businesses find blogging a valuable tool for communicating with employees, customers, and the larger public. knowing how to craft effective blog posts will equip you to reach a large audience and develop strong communities within and outside your company. for what purposes do companies use blogs? check all that apply.
viral marketing
crisis communication
collaborative meetings

Collaborative meetings

Explanation:

A blog is a discussion of the informational website that is published on a world wide web. And the post is one is reverse chronological order. As the blogs are complementary to a particular target or topic ranging from sports to politics. A typical business blog consists of valuable tools like the online personal diaries, that help in communicating with the employees, customers, and the larger public.  It mostly suited the editing purposes and the collaboration within groups. Some blogs are used for ads like the marketing of a product for promotional purposes.

Your answer would be is four