Logical reasoning PrepTest 154 · Section 1 · Question 14

Incorrect. The argument treats a certain amount of improvisation as being a defining feature of jazz—it's the type of improvisation (how far it strays from the base melody) that matters to the classification. Since this answer aligns with the argument, it doesn't weaken it.

Incorrect. Music having a certain influence doesn't guarantee or even suggest that it should be classified the same as that influence. After all, certain popular musicians influence almost every other musician, even in very different genres.

Incorrect. Artists can switch between genres easily, so this answer doesn't impact an argument about music being classified.

Incorrect. If anything, this suggests that this music with the heavy improvisations could be classified as something other than jazz, aligning with the argument.

Correct. Argument or Facts:
Argument

Valid or Flawed:
Flawed

Question Type:
Weaken

Stimulus Summary:
Early jazz's improvisation didn't stray from the simple melodies forming its base. Therefore, later music that had improvisations straying more aren't jazz.

Answer Anticipation:
The argument starts by establishing that early jazz had a certain feature—improvisations that didn't stray far from the base melodies making up that jazz. Then, it says that future music without this feature isn't jazz. That's an illegal negation, even if there isn't any clearly conditional language in the stimulus.

If you didn't see it through that lens, there's another common way to view this—through a comparative lens. The argument says that later music is different from this early jazz in one way (how far the improvisations stray from the base melody), and therefore it shouldn't count as jazz.

Either way, the argument is treating the distance these improvisations stray from the base melody as a determining feature of whether a certain type of music is jazz. Anything that calls this into question will undermine the argument.

Answer Explanation:
This answer calls into question the criteria by which the author is ruling out jazz as the proper classification. While there may be one difference between early jazz and this new music, there are many more things it has in common with jazz compared to every other kind of music. If this new music is more similar to jazz than anything else, then the difference noted in the stimulus may not be the deciding factor.

Key Takeaway:
Arguments and flaws frequently have different "lenses" through which they can be understood, but these different lenses are generally all highlighting the same issue, only in different words. Here, we saw the stimulus through both a conditional (illegal negation) and comparative (one difference determining another) lens. Both, however, got at the same shortcoming in the stimulus—it treated one difference as a key difference, ignoring potential similarities that may have been more important.