According to your textbook, what makes a caste system a closed stratification system?People cannot change their social standings.Most have been outlawed.Outsiders cannot get into the system.Caste systems can only be found in isolated areas.

A caste system is considered a closed stratification system primarily because people cannot change their social standings. This means that individuals are born into their social status, which is determined by their family's caste. This status remains fixed for their entire life, and they cannot move up or down the social ladder, regardless of their achievements or actions.

In addition, outsiders cannot enter the system. This means that if you are not born into a caste, you cannot become a part of it later in life. This further reinforces the rigidity and closed nature of the caste system.

While it's true that most caste systems have been outlawed and they are often found in more isolated areas, these are not the defining characteristics that make a caste system a closed stratification system. The key elements are the inability to change one's social standing and the exclusion of outsiders.