the answer i think is C but doube check
Geographic feature the Silk Road travel all way through is The Mediterranean—- western convergence point of the overland and the maritime trans-Eurasian trade routes. The Mediterranean channeled widespread distribution of Silk Road goods throughout western Eurasia...
three key benefits of the Amazon forest are:the Amazon helps maintain the water cycle by producing large quantities of rainfall every year the Amazon helps to stabilize the earth's climate and slow global warming by fixing seaboard to and producing 20% of the world's oxygen in the process.