Answer:
C) All factors other than the price of bananas (for example, consumer tastes and incomes) are assumed to be constant
Step-by-step explanation:
When developing an economic model, only a limited number of variables can be taken into account for the sake of simplicity and understanding. Economic models never give a full picture of reality, only an approach.
The economic model alluded in the question is perhaps the most famous of all: the supply and demand model. It tells us that, assuming all else constant, the higher price, the less quantity is demanded, and the lower the price, the more quantity is demanded.