What is the best definition of a sustainable diet?
A. A diet of foods from farms that manage pests by using a combination of natural and biological controls and minimal or no application of pesticides
B. A diet of foods entirely produced from agriculture practiced on a small scale using individualized approaches that vary with local conditions
C. A diet of foods entirely from an arrangement in which a farmer offers the public a "subscription" for an allotment of the farm's products throughout the season
D. A diet with low environmental impact that contributes to food and nutrition security and to healthy life for present and future generations e. a diet of foods harvested entirely from agroecological farms