Concept:The poem describes a speaker standing by a house that is dark and lifeless, implying it is deserted or empty.Explanation:In the first line, "Dark house, by which once more I stand," the word "dark" here does not mean merely the absence of light; it suggests the house is uninhabited and forlorn. The speaker recalls waiting at its door, but now that hand "can be clasp'd no more." The house is empty of its beloved occupant, so the speaker returns to a place that is now hollow and abandoned. The imagery of the "long unlovely street" and the "bald street" reinforces this sense of emptiness and loss. Thus, the speaker is standing in front of an empty house, not a graveyard or any other location.Answer:D. empty house