Which of the following is considered not a certified agricultural product?

The reason river-caught salmon is considered not a certified agricultural product relates to the distinction between farmed and wild-sourced items. Certified agricultural products typically refer to those that are cultivated or produced on farms, adhering to specific standards that often include organic and sustainable practices.

In contrast, river-caught salmon is harvested from natural water bodies, not cultivated on a farm. Therefore, it does not fall under the category of agricultural products as defined by regulatory standards designed for farmed goods.

The other options listed—organic carrots, farm fresh eggs, and seasonal strawberries—all represent products that are grown or produced on farms and can be certified based on agricultural practices, including organic certifications. These items are subject to regulations that ensure their quality, safety, and adherence to farming standards, making them certified agricultural products.