PT106.S1.Q13 > Analytics

Hide analysis

Conclusion People who say that Dooney County is flat are clearly wrong. ██ ████ █████ ████ ███████ ██ █████ ██ ███ █ ████████ █████████████ ███████ █████ ████ ██ ████ ██ ███ █████ ████████ ██ ███████ ████████ ███ █ ████ ████ ███ █████ ██ ██████ ██████ ███ ██████ ████ █████████

Summary

Dooney County isn’t flat. How do we know? The author sets up a conditional argument with two key premises:

(1) If farmland is flat, then farmers don’t build terraces to prevent erosion on that land.

(2) In Dooney County, there are terraces on farmland (at least, so the author hears).

13.

The reasoning in the passage ██ ████ ███████ ██ ████ ██ █████ ███ ██ ███ ██████████

Question Type

Parallel method of reasoning

Flat land has no erosion problem. No erosion problem means farmers don't build terraces to prevent erosion. So: flat → no erosion → no terraces to prevent erosion. Then the author observes that Dooney County has terraces.

But notice that flat-land farmers don't build terraces to prevent erosion. The observation is just that Dooney County has terraces. Those terraces could be there for some other reason. The argument assumes the terraces are erosion terraces, but it never confirms that.

We need an answer that follows the same pattern: set up a chain from A to B to C, observe something at the end that the author takes to mean C isn't true, and then conclude that A isn't true.

If we paint ███ ████ ██████ ██ ████ ███ ████████ ███ ██ ████ ████ ██ █████ ██ █████ █████ ██████████ ██ ██████ █████ ██ ████ █████

This recommends an alternative: paint it dark blue. But the stimulus doesn't recommend an alternative. It observes a fact and tries to use the contrapositive of a conditional chain. (A) doesn't try to trigger the contrapositive of a conditional chain.

People with children ████ ████ █████ ████ █████ ███████ █████████ ███ ██████ ████ ██ ████████ ███ ███████ ██████ ██████ ███████

This states two related facts (people with children need more space; people without children can afford bigger houses) but doesn't set up a conditional chain.

People who get █ ███ ██ ████████ ████ ██ ███████ ███████ ███████ ██████ ██████ ███ ███ █ ███ ██ ████████ ██ ███ ███ ██████████ ██ ████ ████ ████ ███████ ████ ██ ██████ ████ █████ ██ ███████████ ██ ██ ████ ███ ██ ███████ █ ███ ██ █████████

This matches the stimulus. People who exercise a lot have no trouble falling asleep, so they don't use sleep medication. Then the argument observes that Jack takes many kinds of medication and concludes he must not be getting exercise.

We know that exercisers don't use sleep medication. But all we know about Jack is that he takes many kinds of medication. The argument assumes sleep medication is among them, just as the stimulus assumes Dooney County's terraces are erosion terraces.

93%

If I go ███████ ████████ ████ █ ██ ███████ █ ███ █████ █████ ███ ██████ ██████ ██████ █████ ██████████ █ ██████ ████ ███████

This argument doesn't work by trying to trigger a contrapositive.

People who have ████ ███████ ████ ██ ██ ███ ██████ ██ ████ ████ █████ ██████████ ██ ███ █████ ██ ████ ████ ████████ ██ ████ ███ █ ████

This argument doesn't work by trying to trigger a contrapositive.

Answer five questions and we'll estimate your score.

It takes about five minutes.

Take the free diagnostic

More free LSAT prep: Sample LSAT questions Full-length diagnostic & practice test All free LSAT resources

PrepTest 106 - Section 1 - Question 13

Answer five questions and we'll estimate your score.

Difficulty

Analysis

Answer Popularity

Question history

Confirm action

PrepTest 106 - Section 1 - Question 13

Answer five questions and we'll estimate your score.

Difficulty

Analysis

Answer Popularity

Question history

Want to know why the right answer is right?