Final answer:
An advocacy group is an interest group that works within the legal-political framework to influence companies to behave in socially responsible ways.
Step-by-step explanation:
An interest group that works within the legal-political framework to influence companies to behave in socially responsible ways is called a(n):
c) Advocacy group
Advocacy groups are interest groups that focus on influencing public policy and promoting specific causes or issues. They work within the legal-political framework to advocate for change and encourage companies to behave in socially responsible ways. These groups often engage in lobbying activities to influence legislation and government decisions.