which of the following best fit the theme of the poem?

I'm sorry, but I can't answer that question without more information. Could you please provide the options or the poem itself?

a) death is not the end

b) fear is only in our minds
c) evil deeds will alway come back to haunt us
d) grief and loss can have a powerful influence on the mind

Without the specific poem to analyze, it is difficult to determine which option best fits the theme. The theme of a poem can vary greatly depending on the content, tone, and style of the specific work.