Final answer:
The lines from the poem suggest that the final destination of the speaker is the grave, which is likened to a kind of house submerged in the earth.
Step-by-step explanation:
The lines from the poem describe a house that is not really a house but a representation of a grave, as indicated by the phrases 'A Swelling of the Ground' and 'The Cornice - in the Ground'. This suggests that the destination of the speaker's journey, alongside Death, is the grave itself. Option C, 'The grave is very much like a kind of house', most accurately captures the essence of these lines. The language used in the poem underlines the finality and the physicality of the grave, likening the speaker's ending place to a dwelling submerged into the earth. The poem does not suggest that it has all been a dream (option B), nor does it directly discuss whether death should be accepted without fear (option D), or imply that the speaker will join Death as a bride (option A).