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Between 1980 and 2000 the sea otter population of the Aleutian Islands

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B
Joined: 14 Jun 2016
Posts: 65

Kudos [?]: 11 [0], given: 38

Location: India
GMAT 1: 600 Q49 V21
WE: Engineering (Manufacturing)
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Re: Between 1980 and 2000 the sea otter population of the Aleutian Islands [#permalink]

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New post 02 Aug 2017, 10:56
WillGetIt wrote:
Between 1980 and 2000 the sea otter population of the Aleutian Islands declined precipitously. There were no signs of disease or malnutrition, so there was probably an increase in the number of otters being eaten by predators. Orcas will eat otters when seals, their normal prey, are unavailable, and the Aleutian Islands seal population declined dramatically in the 1980s. Therefore, orcas were most likely the immediate cause of the otter population decline.

Which of the following, if true, most strengthens the argument‘?

A. The population of sea urchins, the main food of sea otters, has increased since the sea otter population declined.

B. Seals do not eat sea otters, nor do they compete with sea otters for food.

C. Most of the surviving sea otters live in a bay that is inaccessible to orcas.

D. The population of orcas in the Aleutian Islands has declined since the 1980s.

E. An increase in commercial fishing near the Aleutian Islands in the 1980s caused a slight decline in the population of the fish that seals use for food.


Please hit kudos if you like this post.


Nice to solve OG question again....The option C connects with the argument directly and strengthening it... Hence it is the correct answer...
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Kudos [?]: 11 [0], given: 38

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Kudos [?]: 8 [0], given: 113

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Between 1980 and 2000 the sea otter population of the Aleutian Islands [#permalink]

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New post 20 Sep 2017, 23:44
Between 1980 and 2000 the sea otter population of the Aleutian Islands declined precipitously. There were no signs of disease or malnutrition, so there was probably an increase in the number of otters being eaten by predators. Orcas will eat otters when seals, their normal prey, are unavailable, and the Aleutian Islands seal population declined dramatically in the 1980s. Therefore, orcas were most likely the immediate cause of the otter population decline.

Which of the following, if true, most strengthens the argument‘?

A. The population of sea urchins, the main food of sea otters, has increased since the sea otter population declined. - Incorrect: Out of scope

B. Seals do not eat sea otters, nor do they compete with sea otters for food. - Incorrect: Shell game

C. Most of the surviving sea otters live in a bay that is inaccessible to orcas. - Correct: When Cause does not happen [Orcas], Effect does not happen [Otters do not diminishl]

D. The population of orcas in the Aleutian Islands has declined since the 1980s. Incorrect: Out of scope

E. An increase in commercial fishing near the Aleutian Islands in the 1980s caused a slight decline in the population of the fish that seals use for food. - Incorrect: Out of scope

Kudos [?]: 8 [0], given: 113

Between 1980 and 2000 the sea otter population of the Aleutian Islands   [#permalink] 20 Sep 2017, 23:44

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Between 1980 and 2000 the sea otter population of the Aleutian Islands

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