All koalas are bears. All bears hibernate in the winter. Hence, all koalas hibernate in the winter.
A) Valid and sound
B) Valid and unsound
C) Invalid

Question

Quizplus · Accepted Answer

The argument is valid because it follows a correct form of reasoning. However, it is unsound because the premise "all koalas are bears" is false. In fact, koalas are marsupials, not bears. Therefore, the conclusion cannot be accepted as true.

All Koalas Are Bears