Problem and solution essays are short and common types that considered the problems of a particular situation and gives one or more solutions to those problems. Of the options given the only one that best adapts to this premise is option B because is set in a specific place and tries a determined problem which in this case is traffic jams.
The other options are too broad to be treated in a problem and solution essay.
In my opinion, The author stated a problem and offered a solution to this problem which the reader might have been curious to know. Therefore, the reader was persuaded.
