Final answer:
The quality that best defines money as easily carried is Portability. This refers to its physical ease of transportation and immediate readiness in transactions, in contrast to attributes like fungibility or liquidity.
Step-by-step explanation:
The quality that best defines money as being easily carried is Portability. Portability is a characteristic of money that refers to the ease with which it can be transported and used to engage in transactions at different locations. Unlike properties like fungible, which describes the interchangeability of units of a good where each unit is capable of mutual substitution, portability focuses on the physical ease of movement.
For example, money must be portable enough to be carried in commerce, but also sufficiently scarce to retain value. Cash is a very liquid form of money, meaning it can be quickly used to purchase goods and services due to its high portability as compared to checks or credit cards, which may require additional steps or clearance time.