Explanation:

- A zero-level channel, also known as a direct channel, involves selling products directly to consumers without any intermediaries. This is common for businesses like Kannu's, where she's using her own retail outlets to sell her organic food products.

- A one-level channel involves one intermediary, such as a retailer. Here, a producer sells the products to a retailer, who then sells them to the consumer.

- A two-level channel includes two intermediaries, typically a wholesaler and a retailer. The producer sells to a wholesaler, who then sells to a retailer, who finally sells to the consumer.

- A three-level channel includes an additional intermediary, often an agent, along with a wholesaler and retailer, further extending the distribution network.

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