Answer:
d. an incomplete sentence or thought
explanation:
usually it’s missing the subject or the verb
Answer:
Community requests your support
Bullying has reached new levels of danger
Animals are dying-We must speak up
I TOOK THE QUIZ!
Answer:
A: What is the shape of the boom?
Explanation:
I just took the quiz :)
If you mean an adverb clause, I'd say your answer is D. Adverb clauses typically begin with a subordinating conjunction like because, after, if, or although.