6) Marshal
marshal means"officer of the highest rank" which would be the best choice out of these.
7) Whim
Whim mean "a sudden and impulsive action" The word impulse and impulsive are the same.
8) Anarchy
Anarchy means "a state of disorder due to absence or nonrecognition of authority ". The word "heirs" in the sentence is saying that the king did not have anybody who would take his position as ruler meaning that the country did not have any authority.
9) Pretense
Pretense means a false claim. If she is saying she is her friend she would not spread rumors meaning that the false claim was the she claimed she was her friend