Which of the following best describes an interest group?

An interest group is best described as an organization that campaigns for a common goal. These groups are typically formed around shared interests or objectives, such as environmental protection, business interests, labor rights, or public health. They aim to influence public policy and decision-making to support their specific agendas. Interest groups often engage in advocacy, research, and lobbying efforts to promote their causes and bring about change.

While the other options describe various business or economic activities, they do not encompass the defining characteristics of an interest group. For instance, a group of consumers purchasing goods or individuals forming a business for profit focuses more on transactional or operational aspects rather than collective advocacy for a common goal. Similarly, a company that hires employees relates to employment practices rather than the organized effort to influence policies that define an interest group. Thus, the third option clearly aligns with the concept of advocacy and organized efforts aimed at achieving specific objectives within society.