The test below is called a fecal coliform test. Explain what it tests for and what the results show. 
Definitions:
Social Engagement Ad
A type of advertisement designed specifically for social media platforms aimed at encouraging interaction, such as comments, likes, and shares, from the target audience.
Newsfeed Stories
Newsfeed stories refer to the continuously updating list of posts and content displayed on social media platforms based on the user's connections and preferences.
Rich Media
Advanced interactive digital advertising media that can include video, audio, and other elements that encourage viewers to engage and interact.
Geographic Segmentation
The division of a market into segments based on geographical regions, such as countries, states, or cities, to target marketing efforts effectively.
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