Not too sure, but I think it’s the last option: This is a complex sentence because it joins an independent clause with a dependent clause
Answer:
E) All of the above or that's what I think so
Question 17 answer is D none of the above
Question 18 answer is A a recording of events
Question 19 answer is A a laboratory for stars
Question 20 answer is B a room which gets a lot of sunlight
