What does the term 'food miles' refer to?

The term 'food miles' specifically refers to the distance that food travels from the point of production to the point of consumption. This concept is significant because it is often used to evaluate the environmental impact of food transportation; longer distances typically mean a larger carbon footprint due to increased fuel consumption and greenhouse gas emissions during transit. Understanding food miles can also influence consumer choices, with many opting for local products to support local economies and reduce environmental impact.

The other options pertain to different aspects of food and nutrition but do not relate to the definition of food miles. The amount of food waste produced relates more to food management and sustainability rather than distances traveled. The number of meals prepared is about food preparation practices, while the nutritional value of food concerns the health benefits and components of the food itself.