The correct answer is: c) Copper
Copper was the most common material used to make coins in Gujarat during the early period. This is because copper was abundant in the region and was relatively easy to mine and work with. Copper coins were also relatively durable, which made them a good choice for a currency.
Gold and silver were also used to make coins in Gujarat, but they were much less common than copper coins. This is because gold and silver were much more valuable than copper, and they were also more difficult to mine and work with. Gold and silver coins were typically used for trade and commerce, while copper coins were more commonly used for everyday transactions.
Lead was not used to make coins in Gujarat during the early period. This is because lead is a relatively soft metal, and it is not very durable. Lead coins would have been easily damaged, and they would not have been a good choice for a currency.
In conclusion, the most common material used to make coins in Gujarat during the early period was copper. Copper was abundant in the region, it was relatively easy to mine and work with, and it was relatively durable. Gold and silver were also used to make coins in Gujarat, but they were much less common than copper coins. Lead was not used to make coins in Gujarat during the early period.