<span>Three patterns for exposition in writing are the illustrative, analytical and the argumentative patterns</span>
My best guess would be A. B is the second best answer. C and D don't seem to be very good answers. How many attempts do you have at this question?
The personal problem that Milton examined in his poem Lycidas is how to deal with the loss of loved ones.
He wrote in that poem about his best friend who died, so it is a sort of a manual on how to get over your grief as well. It is an ode to his best friend whom he lost and couldn't forget, so he decided to commemorate him in a poem and thus he will live forever through art.
Um, C looks like I fits the sentence.