Edith has gone to the same nail salon for the past five years. She believes that her nail technician, the salon owner, does a better job of painting her nails than anyone else could. Other salons have opened closer to Edith's home, some offering more plush facilities or lower prices, but she isn't tempted to switch. Edith's attitude toward the salon is an example of: a customer retention program. customer loyalty, an opportunity, in SWOT analysis. a sustainable competitive advantage. the benefits of a locational excellence strategy