Explanation for Question 44 From the Reading Section on the 2021 March Sat
Question number 44 asks for evidence for the answer to the previous question. 2 Previous question being questioned 43. 3 So this question is asking about whether there are as many Jupiter mass 4 free-floating planets as earth mass free floating planets. 5 So we want to go find a selection of evidence that has to do 6 with the numbers of earth mass free-floating planets in comparison to Jupiter mass 7 ones. So looking at our answer choices, 8 choice a is lands one through four. 9 It says evidence for up to 10 10 free-floating planets, roughly the size of the massive Jupiter. 11 No comment about earth here so we can eliminate I or other Earth-sized planets. 12 Excuse me, answer choice B is lions nine to 11. 13 This could be just the tip of the iceberg. The team estimates. 14 There could be twice as many free-floating Jupiter, mass planets as stars. 15 So we say that twice as many language being used, 16 but here it's actually in comparison between Jupiter, 17 mass, planets and stars, not earth mass planet. 18 So it's important to be careful what they're comparing their answer choice C is 19 lion's 20 to 23. This says the survey is not sensitive to 20 planets smaller than Jupiter and Saturn. 21 And then it goes on to say what theory suggest. 22 Um, but because this talks about how lower mass planets like earth are actually 23 not going to be detected by the survey. 24 This is our, our best piece of evidence here. 25 Um, because we know that earth sized 26 planets are not going to be picked up by the survey. 27 It wouldn't make sense for there to actually be a conclusive evidence about how 28 many there are. So that relates directly to the previous question. 29 Um, and then lastly, answer twice D lunch, 30 26 to 30, um, 31 talks about previous observations with masses three times side of Jupiter. 32 Um, but again, that's not really touching on those Earth-sized planets so we 33 can eliminate D an answer choice. 34 C is going to be our best selection.