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Bunuel
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Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
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Bunuel
Dengue fever is a viral infection transmitted by the Aedes mosquito, whereas malaria is a parasitic infection transmitted by the Anopheles mosquito. Since both types of mosquito are prevalent on Nicaragua’s “Mosquito Coast,” anyone with a compromised immune system should not travel to this region, particularly during the rainy season.

All of the following, if true, strengthen the argument EXCEPT:

(A) Medicines taken to prevent or treat malaria can cause serious health complications for people with weak immune systems.
(B) The Nicaraguan government is trying to reduce the number of mosquitoes on the Mosquito Coast.
(C) A compromised immune system has difficulty fighting either viral or parasitic infections.
(D) During the rainy season, the populations of both Aedes and Anopheles mosquitoes multiply in the Mosquito Coast.
(E) The most effective chemical insect repellent has been shown to cause brain damage upon repeated application to the skin.

(A) Medicines taken to prevent or treat malaria can cause serious health complications for people with weak immune systems.
Strengthner.(makes me believe on the point that I should not travel there)
(B) The Nicaraguan government is trying to reduce the number of mosquitoes on the Mosquito Coast.
Weakener(makes me think if that's the case there might be a chance I might go there.)
(C) A compromised immune system has difficulty fighting either viral or parasitic infections.
Strengthner(same reason as A)
(D) During the rainy season, the populations of both Aedes and Anopheles mosquitoes multiply in the Mosquito Coast.
Strengthner(same reason as A)
(E) The most effective chemical insect repellent has been shown to cause brain damage upon repeated application to the skin.
Strengthner(same reason as A)
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Bunuel
Dengue fever is a viral infection transmitted by the Aedes mosquito, whereas malaria is a parasitic infection transmitted by the Anopheles mosquito. Since both types of mosquito are prevalent on Nicaragua’s “Mosquito Coast,” anyone with a compromised immune system should not travel to this region, particularly during the rainy season.

All of the following, if true, strengthen the argument EXCEPT:

(A) Medicines taken to prevent or treat malaria can cause serious health complications for people with weak immune systems.
(B) The Nicaraguan government is trying to reduce the number of mosquitoes on the Mosquito Coast.
(C) A compromised immune system has difficulty fighting either viral or parasitic infections.
(D) During the rainy season, the populations of both Aedes and Anopheles mosquitoes multiply in the Mosquito Coast.
(E) The most effective chemical insect repellent has been shown to cause brain damage upon repeated application to the skin.

The only argument weakening the proposition was that the government is taking steps and travelling might not be so bad after all hence correct answer B
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