Duplicity has largely negative connotations as the word is associated with being deceitful or "double-dealing" this could mean making a deal and then backing out at a later date or saying that you will do one thing and then later do something different.
I think I can give maybe some guidance on number two but you’ll have to write it yourself and answer number three yourself. So when they say tell the truth, the whole truth, and nothing but the truth I believe what they want is simply the truth, the whole truth which means no leaving out details tell EVERYTHING, and nothing but the truth means to just not lie. I really hope this helped even a little bit!
Answer:
Can you explain it better?
