Final answer:
The term 'Spendable' is not a recognized classification for Fund Balance within governmental funds; the correct classifications include Non-Spendable, Restricted, Committed, Assigned, and Unassigned.
Step-by-step explanation:
The classifications that may not be used for the Fund Balance of governmental funds include Spendable. Governmental fund balance classifications under the Governmental Accounting Standards Board (GASB) include Non-Spendable, Restricted, Committed, Assigned, and Unassigned. The term 'Spendable' is not one of the recognized categories in governmental fund accounting. Instead, components that can be spent are typically reported within the Assigned and Unassigned categories, depending on the level of constraint placed upon them.