Final answer:
The speaker's tone in the poem is best described as d) 'heartbreaking, but realistic,' due to the use of melancholic imagery and a critical observation of change.
Step-by-step explanation:
The speaker's tone in the poem can be best described as d) heartbreaking, but realistic (option d).
The imagery used throughout the provided text excerpts, such as the dusty and tarnished pipe organs, stained-glass windows surveying, and Christians worshipping the dime, suggests a melancholic ambience and a critical observation of change.
Moreover, the somber Gothic pile, the description of Roderick Usher's lost vigor, and the negative transformation of Goodman Brown reinforce a tone of realism blended with sorrow, aligning with option d).