The answer is B: The dark wood stands in the mist like a somber island.
Imagery that appeals to sight is a form of descriptive language specifically aimed at arousing the imagination of the reader by means of sensory descriptions in order to heighten the depth of a given text.
In the answer above, answer B is the only that appeals directly and uniquely to sight as it describes a piece of dark wood standing mysteriously amongst the fog as if it was a gloomy or dismal island that one can see off in the distance.
