Answer:
The most likely themes of the poem is:
A. A war-torn places can find peace
Step-by-step explanation:
As introduced by Levertov, this poem recalled the time of Christmas in 1972 - when it was the season of peace, holiday in the US, instead of the peace, it was during the bombing in Vietnam. Writing this poem, Levertov moved the images from the violence of the war with the sight of a child with its feed blown off, bombed villages, etc. to the haunting beauty of birds' song, to the peaceful and familiar scene of a countryside in Vietnam. She did emphasis the peace in the context of the war, to highlight the rare moments of peace could be found in a war-torn place like Vietnam.