Passage Summary: Selena says she is psychic, so if we prove she is or isn't, we will know for sure if it's even possible for humans to have psychic abilities.

Conclusion: Determining the truth of Selena's claim will reveal whether psychic powers are possible for anyone.

Reasoning: Selena claims to possess psychic powers.

Analysis: The argument suffers from a massive logical gap by treating Selena as the definitive test case for all of humanity. It assumes that if Selena isn't psychic, then no one can be, or that her specific claim is the only way to prove the existence of such powers. To make this conclusion follow logically, we need an assumption that bridges the gap between Selena's individual status and the universal possibility of psychic powers. Look for an answer that suggests Selena is the only person who could possibly be psychic, or that her failure would disprove the phenomenon entirely.