While researching a topic, a student has taken the following notes: Certhidea olivacea is a perching bird that can be found on the Galápagos Island of Pinzón. Creagrus furcatus is a seabird that can be found on the Galápagos Island of Darwin. Conservation organizations evaluate the risk that species will become extinct in the near future. C. olivacea faces a high risk of extinction. C. furcatus faces little risk of becoming extinct in the near future.

While researching a topic, a student has taken the following notes:Certhidea olivacea is a perching bird that can be found...

GMAT Expression of Ideas : (Expression) Questions

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Expression of Ideas

Rhetorical Synthesis

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While researching a topic, a student has taken the following notes:

Certhidea olivacea is a perching bird that can be found on the Galápagos Island of Pinzón.
Creagrus furcatus is a seabird that can be found on the Galápagos Island of Darwin.
Conservation organizations evaluate the risk that species will become extinct in the near future.
C. olivacea faces a high risk of extinction.
C. furcatus faces little risk of becoming extinct in the near future.

The student wants to compare the extinction risk faced by C. olivacea with that faced by C. furcatus. Which choice most effectively uses relevant information from the notes to accomplish this goal?

According to conservation organizations, C. olivacea has a higher risk of becoming extinct in the near future than C. furcatus.

C. furcatus faces a high risk of extinction, while C. olivacea faces little risk of becoming extinct in the near future.

Conservation organizations have evaluated both C. furcatus's and C. olivacea's risk of becoming extinct in the near future.

C. olivacea is a perching bird that faces a high risk of extinction.

Solution

Step 1: Decode and Map the Passage

Create Passage Analysis Table

Text from Passage	Analysis
"Certhidea olivacea is a perching bird that can be found on the Galápagos Island of Pinzón."	What it says: C. olivacea = perching bird, Pinzón Island What it does: Introduces first species with classification and location What it is: Species identification
"Creagrus furcatus is a seabird that can be found on the Galápagos Island of Darwin."	What it says: C. furcatus = seabird, Darwin Island What it does: Introduces second species with classification and location What it is: Species identification
"Conservation organizations evaluate the risk that species will become extinct in the near future."	What it says: Conservation groups assess extinction risk What it does: Explains the context for risk assessment What it is: Background context
"C. olivacea faces a high risk of extinction."	What it says: C. olivacea = high extinction risk What it does: Provides risk assessment for first species What it is: Risk evaluation
"C. furcatus faces little risk of becoming extinct in the near future."	What it says: C. furcatus = low extinction risk What it does: Provides risk assessment for second species What it is: Risk evaluation

Provide Passage Architecture & Core Elements

Main Point: The research notes present information about two Galápagos bird species and their contrasting extinction risk levels as evaluated by conservation organizations.

Argument Flow: The notes first identify two bird species from different Galápagos islands, then establish that conservation organizations evaluate extinction risks, and finally present the specific risk assessments showing C. olivacea faces high extinction risk while C. furcatus faces little risk.

Step 2: Interpret the Question Precisely

What's being asked? The student wants to compare the extinction risk faced by C. olivacea with that faced by C. furcatus.

What type of answer do we need? We need to find a choice that effectively compares the extinction risks of these two species using a statement that makes a direct comparison between the two species' extinction risks.

Any limiting keywords? Compare

Step 3: Prethink the Answer

The right answer should mention both C. olivacea and C. furcatus
Accurately reflect that C. olivacea has high extinction risk while C. furcatus has low extinction risk
Present this information as a comparison rather than just listing facts
Be accurate to the information provided in the notes

Answer Choices Explained

According to conservation organizations, C. olivacea has a higher risk of becoming extinct in the near future than C. furcatus.

✓ Correct

Creates a direct comparison by stating C. olivacea has higher risk than C. furcatus
Accurately reflects the information from the notes
References conservation organizations for context
Perfectly accomplishes the goal of comparing extinction risks

C. furcatus faces a high risk of extinction, while C. olivacea faces little risk of becoming extinct in the near future.

✗ Incorrect

Reverses the extinction risk information from the notes by claiming C. furcatus faces high risk and C. olivacea faces little risk
This is the exact opposite of what the notes state

Conservation organizations have evaluated both C. furcatus's and C. olivacea's risk of becoming extinct in the near future.

✗ Incorrect

Simply states that both species have been evaluated by conservation organizations but doesn't actually compare their risk levels
Fails to accomplish the goal of showing how their extinction risks differ

C. olivacea is a perching bird that faces a high risk of extinction.

✗ Incorrect

Only mentions C. olivacea and its high extinction risk while completely omitting C. furcatus from the statement
Cannot accomplish a comparison goal when only one species is discussed

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