Logical reasoning PrepTest 110 · Section 2 · Question 15

Incorrect. This answer talks past the argument—while this recommendation might make sense in the context of the argument, the author never makes any such claim.

Incorrect. The stimulus discusses only resolution, so this answer is out of scope.

Correct. Argument or Facts:
Argument

Valid or Flawed:
Flawed

Question Type:
Main Point

Stimulus Summary:
Camera ads focus on resolution, but all modern lenses are so good that they project more info than can be captured in film, so resolution differences are irrelevant.

Answer Anticipation:
This argument has clear structural indicators that point straight to the conclusion. It starts by introducing a current state of affairs, pivots ("however") to an opinion/judgment (which tend to be conclusions) and then moves on to a premise that based on the introductory keyword ("since") directly supports the pivot statement.

As such the pivot statement is the main point of the argument—differences between camera resolutions are irrelevant for practical photography.

Answer Explanation:
This answer matches the pivot statement. There it says that differences in "this respect" referring to resolution, are irrelevant. This answer matches in saying that different resolutions have "no practical bearing" on the quality—in other words they're irrelevant. This is the correct answer.

Key Takeaway:
Pivots are frequently to the main point of an argument but not always. "Since" is a great keyword because it tells you that a premise is following but there's also a conclusion in the sentence somewhere. For Main Point questions definitely focus on these structural words at least as much as the logic! And be sure not to pick an answer that "talks past" the actual conclusion.

Incorrect. The argument does establish that this focus of advertising actually is irrelevant to the quality of the camera, but that doesn't state that it's a mistake to focus on it. Maybe higher resolutions sell better, even if they make no difference.

Incorrect. Such a comparison is never discussed in the stimulus, so this answer is out of scope.