Gonna need at least a description of it boss.
Answer:
D.An ever-changing system of rules and laws
An interest group (also called an advocacy group, lobbying group,
pressure group, or special interest) is a group, however loosely or
tightly organized, that is determined to encourage or prevent changes in
public policy without trying to be elected.
So based off this knowledge, we can eliminate C. :)
I don't think it's A or B because they are more concerned with change
and advocacy than a "free time" thing.
So going with this definition, I'd go with D ;)
