What type of account change is typically permanent and involves removal?

The correct answer indicates a type of account change that signifies a complete and permanent removal of an account from the system. Decommissioning typically refers to the process where an account, along with its associated data, is entirely removed and rendered inactive. This means that all access and permissions associated with that account are permanently revoked, and the account is no longer retrievable.

In contrast, other options such as deactivation or suspension imply temporary actions where the account can be reactivated in the future. Modification suggests the alteration of existing account settings or characteristics rather than removal. Thus, decommissioning is the most appropriate term for a permanent and complete removal of an account.