Concept:A retail outlet that operates from a specially equipped van and travels to different locations is known as a mobile shop.
Explanation:Retail outlets are classified by their structure and method of selling.
Supermarkets and multiple shops run from permanent buildings.
Mail order retailing is done through catalogues, post, or online platforms.
In contrast, a mobile shop uses a large vehicle that moves from place to place.
Goods are sold directly from this van to customers at various stops.
Therefore, the description given in the question matches only a mobile shop.
Answer:Option D, mobile shop.