The "soundness" of an argument occurs only when.........?

Question: The "soundness" of an argument occurs only when!.!.!.!.!.!.!.!.!.!?
Best Answer - Chosen by Asker:

Only when the mood and figure are valid, the major and minor premises are true, AND the conclusion is true!.Www@QuestionHome@Com

You're in a room by yourself!.Www@QuestionHome@Com