John Ford was the one that wanted that.
The sentence that best supports the statement that Prince Prosperous shows no sympathy for those who were dying is the one in this passage:
"But the Prosperous Prince was happy, fearless and shrewd."
When Prince Prosperous saw that her domains were reduced by half, he made a way of having a thousand of friends, gentlemen and ladies, to follow him to a fortified abbey. There, they would be safe from the Red Death.
The prince was not worried about the people who were dying for sickness caused by the Red Death. His only concern was to feel safe with his entourage in his fortress, enjoying the excentric people and parties.
The way I read it.... option 4
The correct answer is who. Hope this helped!