I think it's C. Heavy means the sigh was long, and obviously loud. Wind through a tomb is used as a metaphor that the sigh was lonely. Lonely means nobody is there, and nobody is there to hear wind go though a tomb, and anyone in the tomb can't hear, because, well, they're dead.
The answer is B. because it shows how it looks. C. is confusing because you think of stormy as an adjective, but it's actually just a verb because it IS storming.
Hope I helped!
A concrete noun employs the senses of sight, touch, hear, taste, and smell. So: Bible, lamb, and tooth
"We have before us an ordeal of the most grievous kind."
