Final answer:
The password history policy prevents users from reusing the same password repeatedly by remembering a set number of unique new passwords.
Step-by-step explanation:
The setting used to prevent users from reusing the same password over and over is the password history policy. This policy is a part of an organization's security settings that dictates how many unique new passwords a user must use before an old password can be reused. For example, if the policy is set to remember the last 5 passwords, the user will not be able to reuse any of their previous 5 passwords.