The correct answer is Eating local grown food.Concept:The concept of a carbon footprint was first recognized in 1990.A carbon footprint describes how much greenhouse gas (CO2, methane) is released into our environment by various types of events, products, and locations.ExplanationEating local food Consuming sessional food products help to reduce carbon footprint.Every year it helps to reduce at least 7% to 9% of the footprint.Hence, eating local-grown food can reduce the level of carbon footprint.Additional InformationEating meat and fish:Meat consumption has a 5-7% increase in carbon footprint every year.Consuming preserved food like canned beans:Avoid consuming preserved food materials such as preserved meat, fish, and beans because refrigeration systems emit a large number of greenhouse gases into our environment, causing a carbon footprint.Consuming dairy products:This industry releases approximately 14.5% of greenhouse gases every year. All these emissions mainly happen because of the fermentation process.Eating meat and fish, consuming preserved food like canned beans, and consuming dairy products is not the correct answer.