Barriers to social mobility are to socioeconomic advancement as A: B is to C: ?

Barriers to social mobility are obstacles that prevent people from moving up in society based on their economic status. In this analogy, we can think of "A" as barriers, "B" as social mobility, and "C" as socioeconomic advancement. Just as barriers make it hard for individuals to improve their social standing, obstacles like lack of education or job opportunities can hinder their ability to achieve better economic conditions. For example, if a child from a low-income family does not have access to good schools, they may struggle to get a well-paying job in the future. Therefore, just as barriers block social mobility, they also block the path to socioeconomic advancement.