Why are coins easier than gold bars to use as money?
a. coins are more durable.
b. coins are more portable.
c. coins are more uniform.
d. coins are more limited.

The correct option that explains why coins are easier than gold bars to use as money is:

Option: B

B. coins are more portable.

Step-by-step explanation:

Portable--

Portable means that it can be carried or easily transported from one place to another.

For money to be practically  used it must be essential that it can be portable as well as divisible to smaller denominations.

Hence, it would be more easy to use coin as a money rather than gold bar.