Question:

SICK BIRD -m> SMALL SPLEEN

KILLED BY PREDATOR -m> SMALL SPLEEN

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This doesn't seem to imply that D is correct to me. Isn't it possible that all of the birds with small spleens who were killed by predators weren't sick?

C: Fear is the path to the dark side

"Fear leads to anger, anger leads to hate, hate leads to suffering."

F -> A -> H -> S

Invalid argument. Assumption = Suffering -> Dark Side.