How does the tone of "Crossing the Bar" change throughout the poem?

A. It remains consistent
B. It becomes increasingly joyful
C. It becomes increasingly somber
D. It shifts between hopefulness and despair

C. It becomes increasingly somber

The tone of "Crossing the Bar" starts off with a sense of acceptance and peace, but as the poem progresses, it becomes more melancholic and reflective as the speaker contemplates their own mortality and the idea of passing into the unknown.