This is not an independent clause: it is dependent on the main phrase here, which is "<span>Most of these animals stay under water".
The underlined clause tells us something about why they must stay under water; and sentences that tell us about the why are called the "adverb clauses" - the correct answer.
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<span>"Food, friends, music—how they brought people together" sounds like a flashback. Flashbacks are when people remember a thing from their past and the word "brought" is often used in flashback's, because it is past tense. hope this helped! : )</span>
1. Went
2. Seen
3. Caught
4. Driven
5. Built
6. Have been
7. Chosen
8. Became
