Explanation for Question 22 From the Reading Section on the 2019 March Sat
Looking now at passage, number three of section one, 2 we're turning to question number 22. 3 This is asking us about the primary purpose of the passage. 4 So note that since it is a fairly general question, 5 sometimes it's useful to do the other questions first and then come back to 6 this one. Once you've already really familiarized yourself with the passage, 7 but that being said, let's jump right into this question. 8 When we're trying to evaluate the primary purpose, 9 we're going to pay attention to the verbs that are used to discuss document 10 present and analyze as well as the subjects in all of these answer choices. 11 So let's go through answer choices choice says discuss the development and significance 12 of the bionic leaf. This answer choice definitely resonates with the topic 13 of the passage about how this bionic leaf has been developed and 14 the importance of it. If we scroll back up to the passage, 15 he can see that this first column centers on how it was developed, 16 what it does, um, and generally it's functioning. 17 Whereas the second column kind of touches on what future applications 18 could be and the role of this innovation in the future. 19 So answer choice, we have a lot of support for that's going to be 20 our best answer choice, um, choice B documenting commercial uses. 21 Well, this might be something that's touched on very, 22 very briefly. It is definitely not the main focus of the passage. 23 So when you approach these questions, you wa...