Correct option (c) Prawn, scorpion, Locusta
Explanation:
Prawn, Scorpion, Locusta belong to phylum- Arthropoda therefore, it is correct. Others can be corrected as Malarial parasite (Plasmodium vivax) and Amoeba belong to phylum-Protozoa.
Mosquito-Phylum -Arthropoda
Earthworm - Phylum -Annelida
Pinworm and Tapeworm -Phylum- Aschelminthes
Sponge-Phylum-Porifera, Sea anemone -
Phylum - Coelenterata
Starflsh - Phylum-Echinodermata
