I think that last one is red
This passage uses personification. Words cannot actually be stiff or heavy, and they do not need to be pushed out of one's mouth, but these adjectives and actions give the reader a vivid picture of Molly trying to say this words, and struggling greatly to do so.
First of all iambic pentameter is lyrical in nature and flows very easily making it easy to remember also its was a convention at the time within poetry (see Shakespear's sonnets) as well as plays. it is also less awkward then basis prose and sounds better this why many rap artist use this system today, remembering that Shakespeare in his day was not particularly highbrow it makes sense why he chose to use iambic pentameter.
Answer:
we are yet not free from corruption..
