The answer is "the class system has fluid boundaries that allow individuals to move from one social level to another social level".
Social class alludes to a gathering of individuals with
comparative levels of riches, impact, and status. Social mobility between
classes is conceivable through training and certain openings. However, for
example rural zones of India and other agrarian social orders utilize the caste
framework, a shut arrangement of social stratification in which the populace is
separated between genetic gatherings.