The correct option is D All of the above
Food adulteration is the mixing of toxic substances in a food item that reduces the nutritional value of the food. Adulterated food is not good for health. AGMARK is the food certificate organisation that analyse the food and gives the certification mark to ensure the good quality of food. It detects the adulteration of spices, grains, milk and any other type of food items. So, the correct option is D.