|Question 21Verbal

Source Texts

Text
The parks of San Diego, California, seem to be making people happier. In a 2022 study, researchers        for a relationship between the physical location in which a social media post was created and the content of that post analyzed geotagged social media posts from San Diego. The team 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?
looking
A
look
B
looked
C
had looked
D