Answer :
The speaker referred to some dull opiate and a drought of vintage impact on the meaning of the poem by establishing the speaker's desire to numb his senses as a means of escape.
What is an ode to a nightingale?
An ode to a nightingale is a poem by John Keats.
In this poem, the poet is praising the singing of the nightingale.
The poet is very sad and wants to take opium to numb his sadness.
The nightingale singing gives happiness to the poet.
In the end, the bird flew away, and the poet is thinking about whether he was dreaming about the bird or if it was real.
Thus, the correct option is B. by establishing the speaker's desire to numb his senses as a means of escape
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