Reading ComprehensionDifficulty: Easy

PT126 S2 P2 Q12 Explanation

Purple Loosestrife

A free, expert breakdown of this official LSAT Reading Comprehension question.

TopicsMethodScience

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Passage

The following passages concern a plant called purple loosestrife. Passage A is excerpted from a report issued by a prairie research a journal of sociology.

Passage A Purple loosestrife (Lythrum salicaria), an aggressive and invasive perennial of Eurasian origin, arrived with settlers in eastern North America in the early 1800s and has spread across the continent’s midlatitude wetlands. The impact of purple loosestrife on native vegetation has been disastrous, with more than 50 percent of the biomass but no measure of the impact of this herbicide on native plant communities has been made.

With the spread of purple loosestrife growing exponentially, some form of integrated control is needed. At present, coping with purple loosestrife hinges on early detection of the weed’s arrival in areas, which allows local minimum damage to the native plant community.

Passage B The war on purple loosestrife is apparently conducted on behalf of nature, an attempt to liberate the biotic community from the tyrannical influence of a life-destroying invasive weed. Indeed, purple loosestrife control is portrayed by its practitioners as an environmental initiative intended to save nature rather than control it. Accordingly, according to the scientific community, and all of nature suffers under its pervasive influence.

Regardless of the perceived and actual ecological effects of the purple invader, it is apparent that popular pollution ideologies have been extended into the wetlands of North America. Consequently, the scientific effort to liberate nature from purple loosestrife has failed to decouple itself from its philosophical origin as an instrument to control hunting, trapping, and recreation revenues due to a decline in the production of the wetland resource.

What this question is testing

Method

Your task

Describe how the argument proceeds — the technique it uses to reach its conclusion.

Common trap

Answers that describe a method the argument doesn't actually use.

Winning move

Track the role each statement plays, then match that to the choice describing the same moves.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
12.

Which one of the following is true about the relationship between the

Answer choices

  1. Unsupported: directly counters8% picked this

    Passage A presents evidence that directly counters claims made in

    Passage A presented evidence such as this: - more than 50% of biomass has been displaced by PL - impact on wildlife haven't been well studied (but serious reductions in waterfowl and aquatic furbearer have been observed) - several endangered species are threatened with further degradation of breeding habitat Passage B acknowledges that the purple loosestrife literature, scientific and otherwise, dutifully discusses the impacts of the weed on endangered species -- and on threatened biodiversity more generally. This basically refers back to Passage A's evidence. Does passage B say those claims are untrue? No, she says, regardless of the perceived and actual ecological effects .... Which means, "I'm not going to even talk about the perceived/actual effects of the purple invader". She just wants to talk about the disingenuous narrative of "liberating nature from PL", when she thinks the movement originated as an instrument to control nature in order to satisfy the wishes of humans who hunt game birds.

  2. Opposite3% picked this

    Passage B assumes what passage A explicitly

    This makes it seem like the two passages are fundamentally aligned / sympathetic. But the opposite is true. Passage A is sounding the ecological alarm over PL, and Passage B is saying, "Chillax. You're just mad that PL is dominating because of your own desire to have these wetlands the way you want them. There's no strong evidence this is harming anything other than your conception of how this habitat should be."

  3. Correct84% picked this

    Passage B displays an awareness of the arguments touched on in passage A, but

    Why this is right

    Passage B almost feels like a response to Passage A, and other "hysterical warnings" like it. Passage B displays an awareness of passage A throughout its first paragraph, summarizing the arguments / evidence that Passage A put forth to convince us we should be concerned about PL. But passage A never displays an awareness of this counterargument that, "Y'all want to get rid of PL because it was messing up your ability to hunt birds, which then gets in the way of businesses that make money via hunting / trapping / recreation revenues".

    Skill tested: Method · how this choice captures the passage's function is the move to repeat next time.

  4. Reversed2% picked this

    Passage B advocates a policy that passage

    Passage B doesn't advocate any policy, unless we interpret the implicit main point of, "Chill out about loosestrife, y'all, or at least be more honest about why you're worried about it", to be a policy. But that's stretching the limits of saying that Passage B ever advocated a policy. This answer seems to be really testing a reversed relationship. Passage A advocates a policy: with the spread of PL growing exponentially, some form of integrated control is needed. And Passage B rejects that notion.

  5. Reversed3% picked this

    Passage A downplays the seriousness of claims made in

    Passage B downplays the seriousness of the claims made in Passage A.

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