Set 6: Central Ideas
Explanation
PASSAGE
The following text describes a phenomenon in quantum physics. Quantum entanglement is a physical phenomenon that occurs when a group of particles are generated, interact, or share spatial proximity in a way such that the quantum state of each particle of the group cannot be described independently of the state of the others, including when the particles are separated by a large distance. Einstein famously referred to this as 'spooky action at a distance.'
What is the defining characteristic of quantum entanglement?
Detailed Explanation
This question asks you to identify the main point of the passage. Choice A is the best answer. The text defines it as a state where particles 'cannot be described independently,' even when 'separated by a large distance.' This interdependence matches Choice A.
Choice B is incorrect because the text says it happens even when 'separated by a large distance.'
Choice C is incorrect because it is described as a 'physical phenomenon,' implying reality.
Choice D is incorrect because gravity is not mentioned. Remember that supporting details help prove the central idea but are not the main point themselves. The author's central idea should be broad enough to encompass the entire passage while still being specific enough to be meaningful. Ask yourself what the author most wants you to understand.
Key Evidence:
• "cannot be described independently"
• "separated by a large distance"
Why others are wrong: B (Contradicts text), C (Incorrect), D (Irrelevant).
🎯 Keep Practicing!
Master all sections for your best SAT score