Final answer:
The speaker in the poem is sorrowful because he is separated from nature.The correct option is C.
Step-by-step explanation:
The speaker in the poem "Lines Written in an Early Spring" is sorrowful because he is separated from nature (option c). The poem describes the fading of flowers and the arrival of winter, which brings sorrow to the speaker. The line "A honey tongue, a heart of gall, Is fancy's spring, but sorrow's fall" suggests that while spring may bring joy and beauty, it is also accompanied by sorrow. This separation from nature contributes to the speaker's sorrow throughout the poem.