by ohthatpatrick Tue Jul 18, 2017 3:13 pm
Before I look at answer choices on a Main Point question, I ask myself,
"What sentence(s) was the Most Valuable Sentence?"
This is really asking, "Given the author's purpose, what sentence best encapsulates or delivers on the author's purpose?"
The author's purpose in this passage (like it is in over 50% of LSAT passages) is revealed around the first BUT / YET / HOWEVER / RECENTLY pivot point. Lines 19-22.
The author's purpose is to answer the question "Why did migration continue even after economic disparity had basically evened out?"
Line 23-25 is the best one sentence takeaway. So I'd be looking for an answer choice that best captures the gist of 19-25.
(A) just a boring fact. This doesn't pose/answer the question about why it continue beyond economic equilibrium.
(B) The passage isn't concerned with how it was TRIGGERED, it's about answering the question of HOW WAS IT SUSTAINED FOR SO LONG?
(C) Close but too narrow. This is part of why the migration continued, but it wasn't the only thing (previous migrants also provided a cultural cushion, for example)
(D) "In migration movements"? Done reading. This is about one specific migration event, not a passage about migration movements in general.
(E) Sure, this'll work. It's a little lame since the author did SPECIFY what some of those other factors were, whereas this answer doesn't. But this is the best match for lines 19-25.
Hope this helps.