I would say b. precious stones Example of commodities that have been used as mediums of exchange include gold, silver, copper, salt, peppercorns, tea, large stones (such as Rai stones), decorated belts, shells, alcohol, cigarettes, cannabis, candy, cocoa beans, cowries and barley.
D I took this test and I believe this was it
Cecil Rhodes was the person that named a Country after himself.
The answer is plessey vs. fergoson .