Final answer:
Walmart's Supercenters serve 'price-sensitive affluents', a market segment of wealthy consumers who seek value. They prefer the low prices and convenience that Walmart offers.
Step-by-step explanation:
Walmart's Supercenters that serve wealthier shoppers who are looking for deals belong to the market segment known as price-sensitive affluents. These consumers have a high income level but still seek out the best value for their money. They appreciate the convenience of finding a wide array of products at low prices and are attracted to Walmart's ability to offer competitive pricing through its business model, which involves negotiating the lowest possible prices from its vendors to pass on to customers.