Answer:
C) An agricultural group
Explanation:
An agricultural group represents farmers and those involved in the agriculture industry. Corn is a significant crop in the United States, and price fluctuations can significantly impact farmers' livelihoods and the agricultural sector as a whole. As a result, a farming organization would have a direct interest in influencing and regulating corn prices.
Labour unions primarily advocate for workers' rights and interests, including wages, benefits, and working conditions. While some agricultural workers may belong to a labour union, their primary concern would be labour-related issues rather than price regulations for agricultural commodities such as corn.
Professional organizations typically represent people in specific professions or industries. They advocate for professional standards, training, and other issues related to their field. Professional groups for agricultural professionals may exist but focus on expertise and skill development rather than lobbying for price controls.
As the name implies, public-interest organizations advocate for policies and laws that benefit the general public. While some public-interest groups may be concerned about corn production's impact on food security, consumer protection, or environmental sustainability, they may not specifically focus on lobbying for price controls.