The appropriate response is the Silk Road. It was an antiquated system of exchange courses that were for quite a long time key to social communication initially through areas of Eurasia interfacing the East and West and extending from the Korean landmass.
Despite the fact that silk was surely the significant exchange thing sent out from China, numerous different products were exchanged, and also religions, syncretic methods of insight, and different innovations.
I'm going with B as they are funded by taxpayers, some funds come from traffic tickets and such but as with most govt. agencies it is the taxpayer.
The answer would be letter B.
The limit of terms a president can serve