Princess is already in singular form. To make something posessive, you need to add either 's or '. Since the last letter of "princess" is an "s" the answer would be princess'.
C: Eventually, the Romans used the umbrella to protect themselves from the rain as well as the sun.
The answer to the question is c
Margot is quiet and meek l, but Anne insists on upon expressing her own opinions
The answer is A. a colon (:)