Concept:Buying products directly from a machine, without a human seller, is known as automatic vending.
Explanation:Automatic vending machines accept coins, notes, or cards to deliver goods automatically.
These machines are commonly used for snacks, drinks, and tickets.
Branding refers to creating a unique name or image for a product.
Impulse buying means making unplanned purchases due to sudden desire.
A loss leader is an item sold below cost to attract more customers.
Neither branding, impulse buying, nor loss leader describes purchasing from a machine.
Hence, the correct term is automatic vending.
Answer:C. automatic vending