Base on the question where as asking to complete the passage and base on my research and further investigation, One of the way to develop a main idea for the advertisement is to conduct product research. I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarification
Answer:
A) economic interest groups.
Explanation:
Groups that have a vested financial interest. Businesses, labor unions, and professions make up the majority of economic interest groups.
