Which type of sales channels occur in person, allowing customers to ask questions before purchasing?

The correct choice is physical sales channels. These involve direct, face-to-face interactions where customers can engage with sales representatives, ask questions, and clarify any doubts before making a purchase. This type of interaction is essential in creating a personal connection and providing personalized assistance, which can enhance the customer experience and influence purchasing decisions positively.

In contrast, digital sales channels occur online, where customers may not have the opportunity to interact personally with sales staff or receive immediate responses to inquiries. Wholesale refers to the sale of goods in large quantities, typically to retailers or other merchants, rather than directly to consumers, limiting personal interaction. Retail is often associated with the physical context but can also include digital elements; however, it doesn't specifically highlight the in-person aspect, making physical the more accurate choice for this question.