The correct option is A Saprozoic
Musca domestica is the scientific name of the housefly. The housefly belongs to the family Diptera. Nutrition in Musca domestica is saprozoic. This means that the organism obtains the nourishment by absorption of dissolved organic and inorganic materials. Certain protozoans and nematodes feed the same way. The flies of this group have chemosensilla as receptors on the tarsi. These receptors help in sensing the presence of sugar or carbohydrates in liquid or dried form. After sensing the presence of food, the insects secrete viscous liquid as saliva. This saliva and the atmospheric water helps the sugar to get dissolved and get converted in the liquid form. The liquid is then soaked and sucked with the help of the mouth parts.
Thus, the correct answer is option A.