Answer:
The answer to this question is option D. Convertible currency
Step-by-step explanation:
Trader's Paradise insisting on getting paid in a currency that can be traded freely in the foreign exchange market depict the use of a convertible currency.
It is a currency that can be readily bought or sold without government restrictions, in order to purchase another currency. they are currency that can be traded freely in the foreign exchange market.
Hence the answer is D. Convertible currency