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.
1774-1776 why because the intolerable acts was coming into effect due to the boston tea party if that makes any sense if not let me know ill explain more