Free Practice Question
CR · Critical Reasoning
605-655
Conclusion
Based on recent findings, it has been believed that Greenland has been covered by ice for at least the last 12 million years. However, fossils dating back to about two million years ago, previously only found in coastal sediments, were discovered beneath the ice sheet in northern Greenland. This suggests that the Greenland ice sheet must have temporarily melted around two million years ago. It is possible that either significant climate warming or volcanic eruptions in Greenland's highlands could have caused the ice sheet to melt, leading to rising sea levels and flooding the land. What is the main conclusion of this argument?
Answer Choices
Sign in to reveal the correct answerA
The Greenland ice sheet has not been continuously present for the last 12 million years.
B
Fossils of the kind recently found in Greenland are not exclusively found in coastal sediments.
C
The melting of the ice sheet was caused by volcanic eruptions in Greenland's highlands.
D
Greenland is no longer believed to have been covered by ice for the past 12 million years.
E
The ice sheet covering Greenland melted due to either significant climate warming or volcanic eruptions.
Reveal the correct answer
Sign in for free to check your answer and unlock the full explanation.
Track your performance and improve
Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.
Explanation
Unlock the full explanation
Create a free account to reveal the correct answer, see the step-by-step explanation, and start tracking your GMAT progress.
Comments
4
Sign in to join the discussion
N
NikodemJan 6, 2025
thanks
Details
Difficulty
605-655
Type
CR