The options for this question are:
A. "High School Students Volunteer at Senior Center"
B. "Local Woman Donates 2,000th Pint of Blood"
C. "Republicans Sweep State Elections for Second Time in a Row"
D. "Local Citizens Group Persuades City Council to Extend School
Year"
The correct answer is D.
An interest group is a group of individuals that unite around a demand, an issue, something in common that they need. In the political process, this usually happens when a group of people wants something from the government.
In the situation above a group of citizens is organized to demand an extension of the school year. They succeed in pressing the public power to agree to their demands because they collectively organized and were able to show it was a public question.