- Wed Jun 14, 2017 1:13 pm
#36066
Actually, Chica, the last sentence of the second paragraph ("Less clear, however...") isn't trying to explain anything - it's telling us that something has NOT been well explained, which sets us up for the rest of the passage, in which the author then proposes an explanation for that previously unclear thing. In other words, it is not saying that we know something, but that we do not know something. We know that the Great Migration continued, and even accelerated, in the 1920's through the 1950's, but we don't know why. That explains nothing, but tells us that something is true and that needs explaining. That's why B is a bad answer here - that sentence doesn't explain something that comes later, but rather tells us something that IS EXPLAINED later.
That's a clever answer trap they laid for us. Be careful about those!
Adam M. Tyson
PowerScore LSAT, GRE, ACT and SAT Instructor
Follow me on Twitter at
https://twitter.com/LSATadam