Beliefs. Because beliefs is a noun and believes is a verb ;)
The poem speaks of a giant statue of a great and well-renowned king, but that statue lies destroyed in the sand. It speaks of the king being so famous that even "the mighty" cannot compare with it. And yet, in an ironic twist, this statue is described as a wreck. This implies that death overpowers even great fame and wealth, and the best choice is A.
Answer:
write an essay on the most interesting parts of your life
Answer: B. In school, my mother encouraged me to join the band.
The modifier in this case is misplaced as it makes it sound like the mother was at school when she gave the advice. Modifiers can be very important to the structure of a sentence as they can significantly change the meaning if misplaced.
All the other examples express the meaning of the sentence clearly.