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.
<em>Eventually </em>means "in the course of time." So after a long period of time, the plasma reduced its temperature and atoms were created.
B: Then
In this case, the meaning of <em>then </em>is "consequently." Atoms appeared, so the first stars and galaxies formed.
C: However
<em>However </em>introduces a contrast to what has been said previously. Even though scientists know about how atoms formed, they do know how the first stars and galaxies originated.