Logical reasoning PrepTest 157 · Section 3 · Question 7

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.

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.

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.

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.

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.