A recent analysis of consumer behavior within the retail sector revealed that online shopping has surged by 45% over the past year. This increase has led to a corresponding decline in foot traffic to traditional brick-and-mortar stores, which fell by 30%. Retail analysts argue that businesses must adapt their strategies to retain customers. However, some critics question the accuracy of these figures, suggesting that external factors, such as seasonal promotions, may have distorted the actual impact of online shopping.
If the analysts' argument is valid, which of the following would most seriously weaken it?