Final answer:
Aldi grocery stores are categorized as self-service retail outlets due to requiring customers to bag their own groceries, reflecting a focus on efficiency and standardization.
Step-by-step explanation:
At Aldi grocery stores, customers experience a different type of shopping compared to traditional supermarkets. One of the distinguishing features of Aldi is that it requires customers to bag their own groceries. This falls into a category of retail known as self-service retail outlets. These types of stores are designed for efficiency and cost-saving, often reflected in lower prices for the consumers. As Aldi is part of a chain that emphasizes predictability, calculability, and control, it mirrors the traits of what is known as the McDonaldization of retail, which prioritizes standardized processes and products over personalized service.