Prince Prospero goes to the abbey in order to... A help victims of disease to recover quickly.
B
protect himself and his
friends from disease.
have a massive feast to celebrate the end of disease.
pray for the recovery of those affected by disease.

c. in the address bar

a. "to practice" is the best phrase to complete the sentence.

explanation:

during the summer, she likes to practice her soccer skills so that she is ready to play in the fall.

(note that : all the other options "the practicing of", "practice for" and "to do a practice on" are inappropriate as they make the sentence grammatically incorrect.)

may i know the title of the book?