Final answer:
The Smart Reporting Timeline displays reports, storyboards, dashboards, posts, discussions, and notifications as thumbnails.
Explanation:
Smart Reporting Timeline on Brainly shows thumbnails of various types of events. These include Reports, Storyboards, and Dashboards. Posts, discussions, and notifications are also viewable as thumbnails on the timeline, making all of the above options correct.
Learn more about Smart Reporting Timeline here:
https://brainly.com/question/33388843
