Multiple choice Carbon footprint is.... The amount of oxygen produced when we produce food. The amount of gas produced when we eat food. The amount of carbon dioxide produced when we eat food. The amount of carbon dioxide produced when we produce food. Reveal answer Fill a bubble to check yourself D Correct answer Explanation A carbon footprint measures the total greenhouse gas emissions, primarily carbon dioxide, caused directly and indirectly by an individual, organization, event, or product, such as the production of food.