Which approach would most likely be the best to use for an interest group that does not have much money to spend to advance its goal? Why is the chosen approach superior to the other approaches?

Topic:Interest groups use a variety of approaches to advance their goals, including violent protests, appeals to the public, approaching the judiciary, approaching lawmakers, and demonstrations. Which approach would most likely be the best to use for an interest group that does not have much money to spend to advance its goal? Why is the chosen approach superior to the other approaches?