The one you cursor is already on.
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They are protest poems because the poet used the poems to express beliefs a bout wars and about the government that led her to wars. They are full of ideological beliefs and are kind of persuasive so they are often considered to be protest poems.
Answer:
B (the one you selected)
Explanation:
A is not right since many stories use more than one theme, especially in arcs.
C is not right since the subject is what the story is about, which can not line up with the theme.
D is not right because most real world examples do not do this.
I believe the answer to this question is the third option: worry