The test was as difficult as storming Normandy beach The task was as difficult as experimenting the atom bomb The building of the ship was as difficult as carving a statue
As difficult as learning quantum math As difficult as running five miles in one minute As difficult as learning three languages As difficult as catching a greased pig
the answer should be D. Because the above answers give us statements outlining their point of the essay, such as "Celebrities don't set good examples for children."