PrepTest 157

[lcid:3726] Prep Test 157 LSAT — Logical Reasoning — S3 Logical reasoning

Question prompt

News report: Some recently Remaining source text redacted.
Why the credited answer is right

Credited answer: D

The notes below walk through why it fits the stem and how to eliminate the rest.

Argument or Facts

Facts

Strategy Overview

Argument or facts in passage?
If argument, identify premises and conclusions
Sufficient/necessary conditions in the passage?
If so, diagram statements and draw any deductions
Use anticipation to find the answer choice that is absolutely 100% true

Answer Anticipation

Although this set of facts features an "if-then" keyword ("each"), most test-takers would probably find it easier to make the inference without diagramming. We know that some new television screens are made of small connected tiles, and each tile is a miniature screen that can get super bright. Unlike old screens, we can connect an unlimited number of tiles and not make the screen dimmer or thicker. Putting these facts together, we know we can now make a television screen that's very large, very bright, and not very thick. The correct answer could reflect this summary. Or, it could restate one of the stated facts. Let's keep an open mind as we assess the answer choices.

Answer choices

  1. A
    The technology used to Remaining source text redacted.
    Why choice A is not credited

    Why wouldn't this technology be appropriate for small-screen television? True, one of the main advantages of the new screen is that they can be very large and maintain their brightness. But these new screens could still have advantages over older screens that are apparent even in small-screen televisions. After all, we know that the new screens are only a few inches thick, which could make the small-screen televisions very light and portable.

  2. B
    There is a great Remaining source text redacted.
    Why choice B is not credited

    Well, these new television screens sound pretty sick, but the passage doesn't tell us whether people actually want to buy them yet. Remember, when we're connecting facts, we need to stick to the facts. We don't know if there's actually "a great consumer demand" for these new screens. Maybe they're too expensive right now, or maybe people don't want them for some other reason.

  3. C
    In a television set Remaining source text redacted.
    Why choice C is not credited

    This misstates a claim from the passage. The passage says, "For a noncompound screen [a few inches thick], the larger the screen is, the dimmer it is." The last sentence implies that a larger compound screen might also need to be thicker to maintain its brightness. However, this doesn't imply the proportional relationship (C) asserts. There may be limits to how much brighter we can make a screen. After a certain depth, the screen may not get any brighter.

  4. D
    Television sets that are Remaining source text redacted.
    Why choice D matches the stem

    Here it is. As we anticipated, the passage implies that we can now make a television screen that's very large, very bright, and not very thick. We can make these sorts of televisions by connecting these small, bright tiles. And we can make this inference by connecting the facts about these small, bright tiles. Let's select (D) and give the last answer choice an, at most, quick glance.

  5. E
    Television sets with compound Remaining source text redacted.
    Why choice E is not credited

    This is far too bold. These new television screens sound cool, but they might have many disadvantages. They could be more expensive than older screens. They may project blurrier images than older screens. They may cause more retina damage than older screens. We really only know that the new screens can be bigger, brighter, and less thick than older screens. That doesn't imply that the new screens are better in every way.

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