Concept:Tone is the poet's attitude, and it can only be judged from the words of the poem itself.
Explanation:The question asks you to select the mood of the poem from the four options.
Option A, derisive, means mocking or showing contempt.
Option B, ecstatic, means full of uncontrolled joy.
Option C, regretful, means feeling sad about something done or missed.
Option D, melancholic, means deeply sad or pensive.
The correct choice depends on the language, descriptions, and feelings expressed in the poem.
Without the poem text, there is no evidence to connect any of these moods to the speaker.
Therefore, a reliable determination cannot be made in this case.
Answer:Cannot be determined from the provided information.