I think the teacher wants you to write about something that poses a problem in real life and needs a good solution. She/He wants you to use a problem with an existing solution, but they want you to write about if the solution is good or if its bad and what should have been done instead.
Hope this clarified the prompt up! Look online for topics/issues you're passionate about! :)
"A.Clear Skies" is the correct answer. This phrase is often used to imply that there should be no issue going forward with a certain task or event. It comes from the lingo of pilots and sailors.