Explanation for Question 46 From the Reading Section on the 2019 May Sat
Question 46 asks which choice provides the best evidence for the answer to the 2 previous question. Now we determine in an earlier video that the correct answer to 3 question 45, that previous question mentioned is answer choice C that 4 the passage most strongly suggested in designing their experiment to Barry and Wilhelm us, 5 try to exclude the possibility that the apparatus in which the brine shrimp were 6 influenced or were held, influenced the results of the experiments. 7 So let's look at the lines of evidence given to us as answer choices 8 in question 46 and see which one best supports this idea. 9 So remember, we're talking about the exclusion of the influence 10 of the apparatus in which the brine shrimp were held. 11 So we'll start with answer choice a lines 26 or 29. 12 And those lines say the creatures are strongly attracted to those colors 13 to be reset. The researchers shown the blue laser into the tank and moved 14 it slowly up and down to control the crustaceans vertical movement. 15 So in this case answer choice a is going to be incorrect. 16 You don't see anything here about like controlling 17 certain variables so that the experiment is more feasible or has more 18 integrity. In this case, you just see what they're doing with the blue laser 19 and not really anything about how the apparatus could affect the 20 experiment. So if we move on to answer choice B lines, 21 29 through 33, it says the tank solid walls could strongly affect 22 the flow patterns g...