First, make sure to review the material you have already learned, slowly lean into the new material, making sure you cover everything thoroughly
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
so what Iducky22 is pretty much saying is d would be the answer for e2020