This is quite difficult to answer since the puritans were persons who had very strict moral values and i can't find an answer to correspond with the definition.
The correct answer is "Slang displays a tone that is too casual"
Slang speak is highly informal, sometimes even offensive. One should never use slang in a business setting because business deals should be kept highly informal and professional. Slang shouldn't be used under any circumstance as it may insult the people with whom we are talking by making it seem that we don't appreciate them or their business endeavors.
Pathos is a fancy word for emotion(s). So, explain what pathos is, then use the language and tone used in the Gettysburg Address to support it.