Question

How was Persian coinage sophisticated?
a.
It was made out of gold.
b.
It was the first examples of relief in metal.
c.
The amount of gold in each coin was measured exactly.
d.
Each coin had a different image on it, in order to remind the people of past great rulers.

Answer 1

c. The amount of gold in each coin was measured exactly.

Persian (Achaemenid) coinage — especially the gold daric and silver siglos — was notable for standardized weight and purity, which made them reliable for trade and helped integrate the empire's economy.