Explanation for Question 45 From the Reading Section on the 2019 April Sat
45 says, according to passage, one, 2 the team of scientists believes that the black carbonized material found in certain sedimentary 3 layers was caused by which phenomenon following a cosmic collision. 4 So let's go to the passage to see where it talks about these layers. 5 We are looking at passage one and then right at the very 6 end here, it mentions the black layers. 7 So it says, in addition, the rocks contained black layers of carbonized material, 8 which the team says are the remains of wildfires that swept across the continent 9 after the impact. So it says remains of wildfires. 10 If we look at our answer choices, 11 that means the correct answer is C rapidly spreading fires.