[Video] Q21: The main purpose of the passage is to

Explanation for Question 21 From the Reading Section on the 2018 April Sat

Hey guys. So question 21 asks us the main purpose of the passage is 2 to blank. So we need to have obviously read the passage and think about 3 it as a whole will be seen. This passage is essentially this hypothesis 4 about this connection that plants have through a fungal network to warn each other 5 of certain dangers. And then we see the experiment design, 6 how this guy, Dr. Johnson, put it together, 7 tested this with plants in order to see if this was true and then 8 found data supporting that conclusion option. 9 A says that the main purpose is to discuss a finding that addresses an 10 ongoing problem. Now, there is no problem identified here. 11 There's only a question about what is true and what is not. 12 So there isn't a problem that is being dealt with option B says, 13 describe an experiment whose results support a particular conclusion. 14 This does seem to be directly accurate. 15 He makes us theory about what he thinks is going on with plants and 16 then creates an experiment that supports that conclusion that plants are talking with one 17 another through these fungal networks, option C says, 18 introduce a research methodology that revolutionizes a process, 19 nothing here about this research methodology is revolutionizing any sort of process that 20 in no way is connected to the passage. As a whole D says, 21 outline a scientific study that undermines a popular theory. 22 Now there is no popular theory that is being undermined here. 23 There's simply proposal that they, that maybe this is true and here's a scientific 24 study that supports that idea, but there's no undermining about already existing popular 25 belief. That's done this passage. Therefore, 26 option B is clearly the writer.