Answer:
D. goods are bartered without speaking.
Explanation:
Silent trade, additionally called dumb barter, is a specific type of deal in which merchandise are traded with no immediate contact between the merchants. For the most part, one gathering goes to a standard spot, stores the products to be exchanged, and pulls back, some of the time calling a flag, for example, or a gong stroke. Another gathering at that point comes to leave a second arrangement of articles and withdraws. The main gathering returns, evacuating these new merchandise whenever fulfilled or abandoning them until increases are made. The second gathering at that point takes the first products to finish up the exchange.
