Question

what is an essential element of an open class system?
a. the understanding that some people have a higher social class than others
b. written rules that determine the social class of everyone
c. the ability of a person to enter a different social class within his or her lifetime
d. beliefs that a person could be in another social class after reincarnation

Explanation:

An open class system emphasizes social mobility. Option C refers to a person's ability to change social classes during their lifetime, which is a key characteristic. Option A is a general aspect of class systems. Option B is more related to closed systems with rigid rules. Option D is about reincarnation (a religious - related concept in some cultures) and not the core of an open class system.

Answer:

C. The ability of a person to enter a different social class within his or her lifetime