C. Critics of the mayor often gibe about his less-than-perfect articulation of ideas
Explanation:
C. is the correct answer because it uses the word gibe in a taunting, heckling, and jeering remarks. Also the question asking you to find the sentence meaning what was just explained above so answer C does that.
An example of this could be shown in an email to the city’s head of the local electric power plant to persuade them to place more streetlights on a specific side of town.
I think it would be ‘problem and solution’ but i haven’t read the article because it isn’t linked. however ‘problem and solution’ does sound like it would fit best :)