Final answer:
Lydia's willingness to go out of her way to save on detergent suggests she has inelastic demand for that brand, while most consumers view price as the sacrifice for goods, indicative of more elastic demand.
Step-by-step explanation:
Lydia perceives price as inelastic for a good or service, while most consumers recognize price as the sacrifice made to acquire a good or service. When Lydia drives 10 miles out of her way to save a dollar on her preferred brand of laundry detergent, her actions suggest that the demand for her preferred brand of detergent is inelastic to her. This is because she is willing to go through a significant inconvenience for a relatively small financial saving, implying that her demand for the product does not change much in response to price changes. On the other hand, most consumers view the price they pay as the sacrifice necessary to obtain goods or services, and their purchasing decisions might be more sensitive to price changes, indicating more elastic demand.