1. recruits members and leaders.
2. Develops policy
3. indoctrinates the people.
4. Maintains discipline
Stanton
Elizabeth Cady Stanton
The correct answer in this case is liberalism.
Socialism is the opposite as it entails (Among other things) the idea of fast changes, if need be with revolution. Neither does utilitarianism talk about social progress through reform.
Libertarians talk exactly about what the question is about; one of the main tennets of liberalism is that they prefer and would like to witness social change through reforms.
To investigate causes of civil disorder and recommend solutions.
