A spell that inflicts severe pain upon the victim
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Cruciatus
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Avada Kedavra
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Ennervate
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Fidelius
A
Correct answer
Explanation
Cruciatus is the torture curse that inflicts excruciating pain on the victim, one of the three Unforgivable Curses. It was regularly used by Death Eaters and Voldemort. Avada Kedavra is the Killing Curse, Ennervate revives stunned people, and Fidelius is a complex protection charm.