Argument: 'All fertile soils contain organic matter. Sandy desert soil does not contain organic matter. Therefore, sandy desert soil is not fertile.' Which argument shares this valid deductive structure?
Options:
(A) All mammals are warm-blooded. Reptiles are not warm-blooded. Therefore, reptiles are not mammals.
(B) All mammals are warm-blooded. Dogs are warm-blooded. Therefore, dogs are mammals.
(C) Some birds fly. Ostriches do not fly. Therefore, ostriches are mammals.
(D) If it snows, it is cold. It is cold. Therefore, it is snowing.
Answer Key:
A
Step-by-Step Solution & Explanation
Both exhibit valid modus tollens: All A are B; C is not B; therefore C is not A.