What is the effect of the last stanza mimicking the first A) The speaker disturbed from his sleep is angered at the sudden tapping. B) The tapping has become more dramatic but the speaker has grown di?

B) The tapping has become more dramatic but the speaker has grown desensitized to it, showing a shift in the speaker's attitude or emotional response over time. This contrast between the first and last stanzas emphasizes the ongoing nature of the tapping and the speaker's changing perception of it.