The correct option is B A-III, B-IV, C-II, D-I
Pila or the apple snail is a mollusc. Its mouth contains a file-like rasping organ called radula for feeding.
Bombyx or the silkworm is an arthropod and hence has Malphigian tubules for excretion.
Pleurobrachia belongs to the phylum ctenophora. It has ciliated structures called comb plates for locomotion.
Taenia or the tapeworm belongs to the phylum platyhelminthes. It has specialised cells called flame cells which help it in osmoregulation and excretion.