Final answer:
Sociologists have used their understanding of social inequality to advocate for social justice and equality. One example is Jane Addams, who focused on providing social services to marginalized groups. Sociologists recognize that social stratification is a society-wide system that influences individuals' social standing.
Step-by-step explanation:
Sociologists, such as Karl Marx, Jane Addams, and Ida Wells-Barnett, have used their understanding of social inequality to advocate for social justice and equality. Marx believed that conflicts and revolutions were necessary for a more egalitarian society, while Addams focused on providing social services and healthcare to marginalized groups. Sociologists also recognize that social stratification is a society-wide system that makes inequalities apparent, and that individuals' social standing is influenced by the structure of society.