How did Thror and Thrain escape? This question is from hobbit

Thror and Thrain mysteriously escaped from Samaug.

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Explanation:

With Thorin and the dwarves in prison, Bilbo becomes responsible for the fate of the entire group. He uses the power of the ring to stay invisible and learn what he must to secure their escape. His resourcefulness grows, and he develops an escape plan that proves to be successful. He also exercises bravery in stealing the keys from the prison guard.

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Explanation:

most likely the answer would be a.) cupidity

definitions:

cupidity - greed for money or possessions

hydrophobia - extreme or irrational fear of water, especially as a symptom of rabies in humans

pathology - the science of the causes and effects of diseases, especially the branch of medicine that deals with the laboratory examination of samples of body tissue for diagnostic or forensic

patho -   relating to disease