The reason why the demand curve would not shift is c.) there are changes in the price of the good.
Do price changes shift the demand curve?
Changes in the price of the good itself do not shift the demand curve. Instead, they lead to movements along the existing demand curve, representing changes in the quantity demanded in response to changes in price.
Shifts in the demand curve occur due to factors other than the price of the good itself, such as changes in consumer preferences (option d), changes in the prices of substitutes, and changes in the prices of complements . These factors can cause the entire demand curve to shift to the left or right.