The correct option is D Larvae
Adulteration is a process wherein food quality is reduced by adding adulterants or removing nutrients. Adulterants can be incidental, intentional and metallic. Intentional one such as sand, marbles, stones, chips, natural food colors are generally added for financial gain whereas, incidental ones are added without human knowledge. For example, pesticide residue, larvae in food, rodent droppings. Metallic contaminants refer to the addition of any type of element to food such as lead from water, arsenic from pesticides, tin from cans, etc.