Final answer:
Cindy uses comparative shopping, looking at factors like price and schedule, to choose the best airline offer even though she has Delta Sky Miles, demonstrating a strategic consumer approach in the competitive airline market.
Step-by-step explanation:
Cindy uses comparative shopping to decide which airline to fly. Even though she has accumulated a significant amount of Delta Sky Miles, she compares the offers of various airlines using an online fare comparison website. She considers multiple factors such as price and schedule convenience before making a decision, ensuring she gets the best possible deal or the most suitable flight timing for her needs. This kind of behavior exemplifies a savvy consumer practice in an industry that has become highly competitive due to the deregulation, increased efficiency, and the rise of frequent-flyer programs like Delta Sky Miles that incentivize customer loyalty.