Step-by-step explanation:
Interest groups or pressure groups are composed of organizations or associations of people organized in a formal way, whose central objective is to influence the development of public policies for the benefit of their own interests and causes, through the use of lobbying.
The use of celebrity spokespersons is a common practice of gaining influence, which can be an effective practice if the personality and values of the celebrity in question are compatible with the policies they wish to gain influence from, as a celebrity has the advantage of having popular support for influence.