DISCUSSION: The author praises Curie’s discoveries and defends her failure to discover the true cause of radioactivity.
___________
- CORRECT. The author mentions Curie’s accomplishments, and argues that critics ignore the context of Curie’s time. She couldn’t have figured out radiation, because quantum mechanics hadn’t been discovered.
- The only scientific dispute is the one between physicists and chemists, in the third paragraph. It’s a dispute from the past, and it has already been resolved.
- The only currently accepted theory mentioned is quantum mechanics. We’re not told why this was accepted. This answer choice also ignores Curie.
- The final paragraph does explain why radiation occurs. But there’s no mention of a debate that led to the discovery of the true cause of radiation.
- The only theory mentioned is quantum mechanics, and the passage clearly suggests it is correct.
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