Answer:
D. An Arabian sultan wears a robe made from Chinese silk.
Step-by-step explanation:
This exemplifies clearly the impact of trade since some who makes the clothes that the Sultan wears might have bought Chinese silk to make clothes of high quality. This culminated in the sultan liking the clothes made from the different material and buying it. For more of this to be made, more silk will have to be bought. Maybe, because of the Sultan, wealthy people will want all their clothes made of SIlk, which can only happen it the one who made the Sultan's clothes can keep buying from the Chinese.