Explanation for Question 51 From the Reading Section on the 2018 May Sat
Question number 51 and 52, 2 our last for the section. And they ask us about the figure added onto 3 the end of the passage. 51 says according to the figure, 4 which choice is a possible Redshift of a galaxy made of stars that formed 5 during the cosmic dot. So we're looking at Redshift during the cosmic Dawn, 6 looking at our figure. We see that we're the figure speaks 7 to two different variables, star formation rate, 8 and Redshift as a function of time since the big bang. 9 So the cosmic Dawn period is this sort of lighter shaded region 10 at the very beginning, close to when the big bang occurred. 11 So in this period, we are looking for Redshift. 12 Redshift is measured on this axis here. 13 So the Redshift that we see during the cosmic Dawn, 14 this period is around nine. 15 So that's going to be our correct answer for 51 choice D nine.