Is. "Everybody" is taken as singular.
The best correction of the clause fragment is to C. delete the word "although."
Without that word, you get a proper single independent sentence, and not a fragment.
The poet dedicated this poem to Chiwoniso Maraine, a singer, and songwriter who died of pneumonia.
Because of her beautiful voice that she showed to the world, she inspired Africans and made them proud. The poet equated it to restoring the all the treasures of Africa.
The importance is that it lets us understand our thoughts, feelings and physical responses to conflict, we may get better insights into the best potential solutions to the situation.