Which of the following is not a method of selling

"Stock control" is not a method of selling. Stock control is the process of managing the inventory or stock of a business to ensure that the right products are available in the right quantities at the right time. On the other hand, self-services, exhibition, mail order, and automatic vending are all methods of selling. - Self-service is a method of selling where customers help themselves to the products they want to buy without the assistance of a salesperson. - Exhibition is a method of selling where businesses showcase their products and services to potential customers at a public event. - Mail order is a method of selling where customers order products from a catalogue or website and have them delivered to their location. - Automatic vending is a method of selling where products are dispensed automatically from a vending machine when customers insert coins or bills or swipe a credit or debit card. Therefore, "stock control" is the option that is not a method of selling.