The correct option is that they carry a deeper by narrower assortment of merchandise within a single category of interest.
This refers to a retail store which lay emphasis on selling products which have specific category. It is to be noted that specialty store have a wide selection of products but few categories.
Hence, the correct option is that they carry a deeper by narrower assortment of merchandise within a single category of interest.
Learn more about specialty stores here: https://brainly.com/question/7145120
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