Final answer:
Changes in the number of producers and changes in government policy can result in a change in the price of a basket of grape fruits.
Step-by-step explanation:
Two independent variables that could result in a change in the price of a basket of grape fruits are changes in the number of producers and changes in government policy. A change in the number of producers can affect the supply of grape fruits. If more producers enter the market, the supply of grape fruits may increase, which could potentially lower the price. Conversely, if the number of producers decreases, the supply may decrease, leading to a higher price. Changes in government policy can also impact the price of grape fruits. For example, if the government imposes higher taxes or regulations on grape fruit production, it could increase production costs and potentially lead to higher prices.