Answer:
C. Observing what happened to the Spartans and the Romans shows that it is best to destroy a newly acquired state that is accustomed to freedom.
Step-by-step explanation:
'The Prince' is a book written by Niccolò Machiavelli. The book is a guide for princes on how to rule and principles of princely administration.
In chapter 5, in given text, the author is contrasting between two kingdoms and the way they conquered the newly acquired states. By showing this difference, the author is stating that for a Prince, it os good to destror the newly acquired states, who are accustomed to freedom. Because if they will establish oligarchy, they will loose like Spartans, but if they will behave with them like Romans, they will rule over them
Therefore, option C is correct.