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Set 3: Command of Evidence (Advanced)

Explanation

Answer: B

PASSAGE

The Fermi Paradox asks: if the universe is vast and old, why have we not detected extraterrestrial civilizations? Proposed explanations include the 'Great Filter' hypothesis—that civilizations inevitably destroy themselves—or that communication is impossible over galactic distances.

What does the 'Great Filter' hypothesis suggest?

A. Aliens are common.
B. Civilizations face an existential barrier to long-term survival.âś“ Correct
C. Communication is easy.
D. Earth is the only planet.

Detailed Explanation

This question requires you to identify evidence that supports a claim. 'Civilizations inevitably destroy themselves' = existential barrier. The best evidence directly and explicitly supports the stated claim without requiring assumptions. Match specific textual details or data points to the claim being made. The correct answer provides clear, direct support. Strong evidence directly addresses the claim without requiring additional interpretation. When evaluating options, look for quotes or data that explicitly support the statement. Weak evidence may be tangentially related but doesn't provide direct proof.

Key Evidence:

• "The Fermi Paradox asks: if the universe is vast and old, why have we not detected extraterrestrial civilizations"

Why others are wrong: A (This option is incorrect.), C (This option is incorrect.), D (This option is incorrect.).