Explanation for Question 47 From the Reading Section on the 2017 April Sat
Question number 47 reads the pass. 2 It indicates that the structure of the algae consists of components. 3 That what, um, 4 so we're going to look first at the structure of the algae as it's 5 identified in the passage and then take a look at what those components can 6 potentially be characterized as in order to find our correct answer choice to this 7 question. So looking at the structure of the algae, 8 we say that it was identified to be really tough, 9 um, with waves pummeling the algae at really high velocities, 10 um, with a lot of force. So we can see that the calcified or 11 rigid body seaweed has multiple noncalcified joints that make it flexible yet 12 strong enough to handle that setting. So this is really the key part of 13 the passage that we're looking at. We see kind of this balance between rigidity 14 and flexibility. Um, the seaweed is made up of calcified units that 15 are really, really strong, but also has multiple noncalcified joints that give it a 16 little bit of flexibility, um, and both are kind of important. 17 So we have these flexible units of really rigid, 18 um, rigid units. Uh, 19 so answer choice a says change density and response to external conditions. 20 This is not correct. Changing density is not really related to flexibility. 21 There's no changes occurring with that flexibility. 22 There are some flexible components, some non flexible components, 23 but there's, there's no change in density involved there. 24 So we can eliminate a choi...