Explanation for Question 44 From the Reading Section on the 2019 April Sat
For 44, we want to know based on passage one, 2 which hypothetical discovery would provide the most support for the impact hypothesis. 3 So if we look at the passage, 4 it says at the beginning that there are multiple studies arguing 5 that a comment or asteroid exploded above or on the Northern ice cap almost 6 13,000 years ago. So that gives us a timeframe 13,000 years ago. 7 So now we can look at the end, 8 it says certain features of the layers say the team suggests that they contain 9 debris formed by an extraterrestrial impact. 10 These include his field rules of glass and carbon and amounts of the element 11 or radium said to be too high, 12 to have originated on earth. So the reason they believe there was some sort 13 of extraterrestrial impact is because there are elements with a concentration 14 too high to have originated on earth. 15 So now, if we look at our answer choices, 16 the discovery that would provide the most support would be 13,000 17 years ago. Like the opening paragraph said, 18 and there would have to be some sort of element that is rare on 19 earth, but common and asteroids found in the discovery they 20 make. So the correct answer is D.