C. He uses personification to give the fog the human quality of disillusionment.
The fog can hunch,move, and can look which are some human qualities. The fog seems human because of the qualities.
I hope this helped
I believe that the thrush's song changed the mood because it was a song filled with hope from the divine that inspired him. Darkling Thrush refers to a bird who is weak and fragile, however, even with these qualities, he sacrificed himself.
