Answer:
B. Ruth should use the problem-solution structure to show why the dark stories are problematic and how changing them solves the problem.
D. Ruth should give examples of the problems that dark stories can cause for younger audiences and the changes that can solve the problem.
Explanation:
The essay that Ruth will be writing in this case is a persuasive essay. A persuasive essay seeks to convince people to take a particular cause of action for certain reasons. For Ruth to actually show people that there is a need to change the grotesque nature of a folk tale meant for children, she needs to provide reasons to support her argument.
She can also cite examples of the negative consequences of prior grotesque stories. These will help her audience to understand her point of view and be convinced.