An interest group is

A person voters choose to speak and act for their fellow citizens in government

The various means of mass communication as a whole group, such as television

The course of action accepted or used by a government to respond to a problem

A group of people with common goals who work together to promote their cause?

An organization of people sharing common objectives who actively attempt to influence government policymakers through direct and indirect methods

Based on the options given the appropriate answer would be d. a group of people with common goals who work together to promote their cause. An interest group is a formal group that is formed to promote a specific message and to influence government policies on these issues. Examples of interest groups can include manufacturer's associations, environmental organizations and some professional organizations are classified as interest groups.