Concept:Early trade relied on commodity money, such as goods and natural items, before standardised coinage existed.
Explanation:In the early days of trade, people used items like tobacco, cowries, salt, cattle, and metal bars as money because these goods had value and were widely accepted.
Coins are a later form of money, developed after trade had become more organised and standardised.
Since tobacco, cowries, and metal bars were all common early forms of money, the option that was not used in early trade is coins.
Answer:D. Coins