Answer:
What would I do without your smart mouth?
Drawing me in, and you kicking me out
You've got my head spinning, no kidding, I can't pin you down
What's going on in that beautiful mind
I'm on your magical mystery ride
And I'm so dizzy, don't know what hit me, but I'll be alright
My head's under water
But I'm breathing fine
You're crazy and I'm out of my mind
Explanation:
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.
B. would be the best choice to choose.