Based on his studies,Kohlberg concluded that people pass through different stages of moral development,which are ______,operate in sequence,and are irreversible.

A) emergent
B) divisible
C) universal
D) compartmentalized

Kohlberg believes that the stages of moral development are universal, meaning they apply to all people regardless of culture or background. He also believed they operate in sequence and cannot be skipped, and are irreversible once a person has reached a certain stage. "Emergent" could be a possible choice but it is not a term that Kohlberg used to describe the stages. "Divisible" and "compartmentalized" do not accurately describe the nature of the stages as a sequential and irreversible process.