Among the options provided, c) changes in the price of the goods does not cause a shift in the demand curve.
Explanation: The demand curve illustrates the relationship between the price of a good and the quantity demanded by consumers. When the price of the good itself changes, it results in a movement along the demand curve, rather than a shift of the curve. A shift in the demand curve occurs due to external factors affecting demand for the product, such as related goods’ prices (a), changes in consumer preferences or patterns (b), personal preferences (d), or changes in consumers’ income (e). Each of these can lead to an increase or decrease in demand at every price level, hence shifting the curve right or left, respectively.