Answer:
D. Shall plant the Old World in the New.
Step-by-step explanation:
"Shall plant the Old World in the New"
infers that Lowell is illustrating a theme of his past the old world and bringing it back to the new world in this extract.
We are aware that the sentence "I sow again the holy past" demonstrates the significance of his past to him and his desire to bring it back to the new world.