The correct option is C Housefly, Labellum, Pseudotrachea
Labellum are sponge-like organs of the mouth parts, (equivalent to lips) which are present in the housefly. It is a complex strucutre consisting of many grooves, called pseudotrachea, which sops up liquids much like a sponge does.
Dutton membrane are the membrane that connects the labellae.
These are present in the mouth of female mosquito.
Maxillae are the upper jawbone formed from the fusion of two maxillary bones.
Galea is the part which covers the upper part of the cranium in humans and various other animals.
Haustellum is a proboscis in insect which is adapted to suck blood.
Rostrum is a beak-like projection of head in an insect, crustacean or cetacean. It is although absent in tsetse fly.
Thus, the correct answer is option (A),