Analyze the argument is sound or unsound. If unsound, encircle the premises that are not valid and be able to correct and make the argument sound. 1. All rabbits are mammals. All mammals have lungs. Therefore, all rabbits have lungs. 2. All balls are round. The earth is round. Therefore, the Earth is a ball. 3. All ceilings are attached to walls. All doors are attached to walls. Therefore, all doors are ceilings.
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Answer:
1.sound
2.sound
3.unsound (all doors are ceilings)