A. to influence legislators in favor of one particular issue
Explanation:
A Special Interest Group (SIG) is a community within a larger organization with a shared interest in advancing a specific area of knowledge, learning or technology where members cooperate to affect or to produce solutions within their particular field, and may communicate, meet, and organize conferences. Association of people holding similar beliefs & goals, influence public opinion & elected officials.
agricultural economies, ie the ussr, transitioned into full on industrialieconomies through 5 year plans, started with lenin, increasing output of raw materiels like steel and coal.