compared with supermarkets, the product mix for vending machines is:\n\nshallower and narrower\nthe…

Brief Explanations:

Product mix is defined by width (number of different product lines) and depth (number of variations within those lines). Supermarkets are large-scale retailers that offer a vast variety of product categories (wide) and many brands or sizes within each category (deep). In contrast, vending machines have severe physical space constraints. Consequently, they can only carry a few product categories, such as snacks or beverages (narrower), and only a few specific items within those categories (shallower).

Answer:

Shallower and narrower