"All dogs are diseased.John is a dog.Therefore,John went to the vet." Which of the following is true of the preceding argument?
A) The argument is false.
B) The argument has a false conclusion because it has at least one false premise.
C) The argument is not deductively valid.
D) The argument is sound.

Question

Quizplus · Accepted Answer

There are a number of problems with this argument. For one thing, its first premise is false. But the most important problem is that it is not deductively valid. The conclusion might be false even if all the premises had been true. Even if all dogs were diseased and John were a dog, John's owner might not have taken John to the vet.

"All Dogs Are Diseased