Which approach supports an environmentally sustainable diet?

• A. Rely on highly processed foods
• B. Ignore seasonality in food choices
• C. Import foods year-round
• D. Emphasize plant-forward meals, limit processed foods, reduce waste, choose seasonal and local produce, and select sustainable animal products

Answer: (D)

Choosing a diet that emphasizes plant-forward meals, limits processed foods, reduces waste, uses seasonal and local produce, and selects sustainable animal products is the best approach for environmental sustainability because it targets the main levers that drive the environmental impact of our food system.

Plant-forward eating lowers the energy, land, and water needed to produce food and typically reduces greenhouse gas emissions per calorie compared with diets heavy in animal products. It also supports biodiversity by relying more on diverse plant sources. Limiting processed foods reduces the energy and resources spent on cleaning, packaging, and transporting heavily processed items, and it often means choosing foods with fewer additives and less packaging waste. Reducing waste is critical because a large portion of food system emissions come from food that is grown but never eaten; wasting less food preserves the resources used to produce, transport, and store it. Choosing seasonal and local produce lowers the energy demand for long-distance transport, refrigeration, and storage, while supporting freshness and nutrient retention. Selecting sustainable animal products means opting for sources that use lower-emission farming practices, better feed efficiency, and responsible land and water management.

In contrast, relying on highly processed foods, ignoring seasonality, or importing foods year-round generally increases energy use, packaging, and emissions, making them less compatible with environmentally sustainable goals.