Imagine you wish to write a story about a princess. What would be a suitable setting?

The correct option is A A castle in the Middle Ages
A princess is accustomed to a medieval setting with an essence of royalty, lavishness and grandeur. A castle is a place where such setting is facilitated. Therefore Option A is a suitable answer.

Whereas a fishing boat, a quiet farmhouse and a prison are not privileged with such grandeur. Thus the other options are not suitable