Question

what does it mean to be a unit of account?
a. any item that maintains its worth over time.
b. it serves as a valid currency.
c. the item is divisible and each unit is worth the same.
d. any item that can be traded for another item.

Explanation:

A unit of account requires divisibility and uniform value per unit. Option A refers to store - of - value, B is about currency validity (not the core of unit - of - account), and D is related to medium - of - exchange. Only C aligns with the definition of a unit of account.

Answer:

C. The item is divisible and each unit is worth the same.