5
Answer: DSet 5: Command of Evidence
Explanation
PASSAGE
Black holes are regions of space where gravity is so strong that nothing, not even light, can escape. They form when massive stars collapse at the end of their life cycle. Despite their name, black holes cannot be seen directly; their presence is inferred from effects on nearby matter.
How do scientists detect black holes, according to the text?
A. By measuring the light they emit.
B. By observing their effects on nearby matter.
C. By sending probes inside them.
D. They cannot be detected at all.✓ Correct
Detailed Explanation
The text states their 'presence is inferred from effects on nearby matter. '
Key Evidence:
• "inferred from effects on nearby matter"
Why others are wrong: A (They 'cannot be seen directly'; no light escapes.), C (Nothing can escape; probes are impossible.), D (They CAN be detected via inference.).