In the fourteenth century, the western african emperor kankan musa traveled to cairo where he gave away much gold, which was in use as a medium of exchange. we would predict that this increase in gold

The correct answer is raised the price level, but decreased the value of gold in Cairo

The value of things depend mostly on how rare or difficult to obtain they are. For example, the more gold there is the less value it has since everyone can get it. Similar thing happens with food, caviar is expensive because it's difficult to produce, but if it became easy then it's price would drastically drop