Which of the following best describes how a diverse population influences an interest group?

A. Diverse populations influence interest groups by adding them to the ballot.
B. Diverse populations influence interest groups by advocating for policy and change.
C. Diverse populations influence interest groups by marching in Washington, D.C. or in a state capital city.
D. Diverse populations influence interest groups by donating money.

B. Diverse populations influence interest groups by advocating for policy and change.

Interest groups are organizations that seek to influence public policy based on shared concerns or agendas. A diverse population within an interest group can bring a range of perspectives, experiences, and priorities to the table, which can help in advocating for policies that address the needs of a wider array of individuals within society. While the other options may be activities that members of a diverse population, or any population, could engage in to support an interest group's goals, option B most directly describes the influence of the population on the group's efforts to shape policy.