Final answer:
The speaker of 'Introduction to Poetry' is a teacher, evident from their instructional tone and approach to guiding readers through poetry analysis.
Step-by-step explanation:
In the poem "Introduction to Poetry," the speaker of the poem is D) A teacher. This is evident from the way the speaker encourages the reader, presumably a student, to explore and analyze a poem, rather than seeking a straightforward answer. The teaching tone suggests that the speaker is trying to educate and enlighten the audience on how to approach poetry. The speaker uses a series of instructions and metaphors typically associated with a classroom or learning environment, supporting the idea that the speaker is indeed a teacher. Contrary to the instructional mood, the diction is quite informal, aiming to create an inviting and less daunting experience for the reader to engage with poetry.