Answer:
B. Placing the phrase "had I right" at the beginning of the sentence emphasizes the narrator's doubt.
Step-by-step explanation:
In these lines, the speaker reflects on his actions, and on the question of whether he was justified in acting in the way that he did. We learn that he believes that his actions have brought about terrible consequences for the future generations of the world. This sentiment is emphasized by the fact that the speaker begins the sentence with the phrase "had I right...?"