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30 Aug 2021, 07:38
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Bedbug infestations have been a problem in major cities for years. The pesticide DDT has been found to be useful in killing bedbugs. However, DDT was banned in the United States and has been replaced by weaker pesticides. Thus, there is no effective means for eradicating bedbugs in the United States.
Which of the following, if true, most weakens the conclusion?
(A) Bedbugs resemble other small insects in their appearance and behavior.
(B) Bedbugs have largely been eradicated in other parts of the world.
(C) Some treatments that do not include DDT have proven effective against bedbugs in other parts of the world.
(D) Bedbugs are resistant to the types of pesticides used to treat cockroach and ant infestations.
(E) The number of bedbug infestations has risen significantly in the 21st century.
Which of the following, if true, most weakens the conclusion?
(A) Bedbugs resemble other small insects in their appearance and behavior.
(B) Bedbugs have largely been eradicated in other parts of the world.
(C) Some treatments that do not include DDT have proven effective against bedbugs in other parts of the world.
(D) Bedbugs are resistant to the types of pesticides used to treat cockroach and ant infestations.
(E) The number of bedbug infestations has risen significantly in the 21st century.
02 Sep 2021, 10:17
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Bedbug infestations have been a problem in major cities for years. The pesticide DDT has been found to be useful in killing bedbugs. However, DDT was banned in the United States and has been replaced by weaker pesticides. Thus, there is no effective means for eradicating bedbugs in the United States.
conclusion: cannot eradicate BB in USA
many cities have BB problems ---- > DDT kills BBs --------> USA has no DDT -----> cannot eradicate BB in USA
assumption --- > there is no other treatment other than DDT that kills BBs as effectively as DDT does
(A) Bedbugs resemble other small insects in their appearance and behavior.
---- no context on appearance of insects in the argument so out of scope
(B) Bedbugs have largely been eradicated in other parts of the world.
---- may be they used DDT to eradicate, we donno how they did it so out of scope.
(C) Some treatments that do not include DDT have proven effective against bedbugs in other parts of the world.
---- good, as there are effective treatments other than DDT we can still eradicate BBs---> weakens the argument. keep it
(D) Bedbugs are resistant to the types of pesticides used to treat cockroach and ant infestations.
---- we donno whether USA uses pesticides or not so we cannot comment. out of scope
(E) The number of bedbug infestations has risen significantly in the 21st century.
----- the number of infestations is not the point, but the way to eradicate is so oos.
so C
conclusion: cannot eradicate BB in USA
many cities have BB problems ---- > DDT kills BBs --------> USA has no DDT -----> cannot eradicate BB in USA
assumption --- > there is no other treatment other than DDT that kills BBs as effectively as DDT does
(A) Bedbugs resemble other small insects in their appearance and behavior.
---- no context on appearance of insects in the argument so out of scope
(B) Bedbugs have largely been eradicated in other parts of the world.
---- may be they used DDT to eradicate, we donno how they did it so out of scope.
(C) Some treatments that do not include DDT have proven effective against bedbugs in other parts of the world.
---- good, as there are effective treatments other than DDT we can still eradicate BBs---> weakens the argument. keep it
(D) Bedbugs are resistant to the types of pesticides used to treat cockroach and ant infestations.
---- we donno whether USA uses pesticides or not so we cannot comment. out of scope
(E) The number of bedbug infestations has risen significantly in the 21st century.
----- the number of infestations is not the point, but the way to eradicate is so oos.
so C
23 Apr 2025, 07:33
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conclusion: cannot eradicate BB in USA
many cities have BB problems ---- > DDT kills BBs --------> USA has no DDT -----> cannot eradicate BB in USA
assumption --- > there is no other treatment other than DDT that kills BBs as effectively as DDT does
(C) Some treatments that do not include DDT have proven effective against bedbugs in other parts of the world.
---- good, as there are effective treatments other than DDT we can still eradicate BBs---> weakens the argument. keep it
many cities have BB problems ---- > DDT kills BBs --------> USA has no DDT -----> cannot eradicate BB in USA
assumption --- > there is no other treatment other than DDT that kills BBs as effectively as DDT does
(C) Some treatments that do not include DDT have proven effective against bedbugs in other parts of the world.
---- good, as there are effective treatments other than DDT we can still eradicate BBs---> weakens the argument. keep it
