|Question 21Verbal

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Text
The parks of Dallas, Texas, seem to be making people happier. In a 2022 study, researchers studying connections between the physical location in which a social media post was _____ analyzed geotagged social media posts from various locations in Dallas. They found that posts from the city's parks contained more words associated with happiness than other posts did.
Which choice completes the text so that it conforms to the conventions of Standard English?
created, and the post's content
A
created and the post's content
B
created, and the post's content,
C
created and the post's content,
D