medium · LSAT Logical Reasoning

The conclusion follows logically if which one of the following is assumed?

1. Thompson competed professionally for many years across numerous full seasons before finally retiring from the sport.
2. Thompson is a professional athlete who has repeatedly been publicly accused of using banned performance substances.
3. Some athletes who remain fully eligible for the Hall of Fame have never even once used any banned substance whatsoever.
4. Using banned substances is the sole basis on which a professional athlete can be ruled ineligible for the Hall of Fame.
5. No professional athlete who is currently eligible for the Hall of Fame has ever once used any banned substance.

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