Trust your heart, not your Navigator.
There is a thread for Q20 in Passage 4 on PT71
https://www.manhattanprep.com/lsat/foru ... t8995.htmlYou're saying when you were scoring your test on Navigator, you saw you got Q20 wrong and it looked like that question was part of Passage 3?
Anyhoo, since I'm here, I might as well cater to your inquiry.
I think you like (D) because you're thinking, "Well, this is true. There were two different explanations offered. It's still getting debated."
But when you're doing Main Point, you should remind yourself of the Author's Purpose. I'm always picking 1-3 sentences in every passage I read that I consider the Point/Purpose.
For this passage, 48-54 would have been my Most Valuable Sentence(s)
Using the MVS(s) as my "proof window" for big picture RC questions helps me remember which themes/buzzwords LSAT is testing us on.
If you re-read this passage again, now knowing that the author is NOT cool with the front-to-back explanation, you'll hear the foreshadowing of his skepticism.
Physicists are often asked ____ .
Their answer is simply ____ . This is called field-of-sight.
However, some physicists offer a completely different explanation. (front-to-back)
The most notable thing is that it's clearly based on a false premise.
This explanation appeals to many people, however, because it's successful -
to a point.
In addition to intuitive appeal, front-to-back is motivated by ___.
Scientists like to think that _____ .
However,
countdown to mic drop ... Did you FEEL that academic bodyslam, front-to-back?
(Because we LSAT students barely did)
But that's what our author's purpose was in writing this essay: to tell the front-to-back crowd that their style of explanation is inherently deficient.