What factor is NOT considered when discussing food sources in the U.S.?

The rationale behind selecting "number of food banks" as the factor not typically considered when discussing food sources in the U.S. stems from the core definitions and discussions surrounding food sources. Food sources generally refer to the origins of food, including local farming practices, import rates of food products to meet demand, and consumer preferences that dictate what types of foods are sought after and purchased.

Local farming practices are critical as they directly affect the availability and types of food produced. Import rates are also significant, as they highlight the dependence on external markets and how global factors influence domestic food supplies. Consumer preferences shape production decisions and agricultural trends, making them central elements in discussions about food sources.

In contrast, the number of food banks pertains more to food distribution and assistance systems rather than to the origins or variety of food sources themselves. While the existence of food banks reflects issues like food security and access, it does not directly inform the understanding of where food comes from or how it is sourced. Therefore, this factor stands apart from the others in the context of sourcing food in the U.S.