The correct answer is B, a table showing the quantity demanded for a good at different prices. The demand schedule shows how many people want a specific product depending on its price. For example, if a price decreases, the demand schedule will likely show an increase in quantity demanded, because more people will want something that's cheaper. It doesn't concern demographic changes on demand (which has more to do with the population than the individual), it's not a graph (but instead a table), and it's not an analytical report that shows why a change in goods is happening (instead it just shows the change itself).