This passage has a melancholic mood. You can tell this due to some specific key words: "dull", "dark", "soundless." They all have a negative connotation. The imagery of a lone rider in a dreary and dull country under the oppressive sky may clue you in that the overall passage has a sad tone to it. Even later in the passage the author states that the scene is melancholic.
I would say that the best answer would be the last one.
Answer: the reason is because
Explanation:
In general, Emily Dickinson did not title her poems because she did not intend their publication.
???? On whatever you just wrote