Hint: The triploblastic species, bilaterally symmetrical, are molluscs. They have a degree of body organisation at the organ-system level. Some of the representative species of this phylum of the animal kingdom are clams, snails, and squids. Pila belongs to the Ampullariidae family, or Pilidae, of the Gastropoda mollusc class.
Complete answer: Molluscs are species with a shell of calcium carbonate protecting their soft bodies. They have a large muscular foot which is used in locomotion. All the internal organs are located in the visceral mass and are covered with a thin layer of tissue called the mantle. The Mollusca phylum is split into four major classes: Polyplacophora, Gastropoda, Bivalvia, and Cephalopoda. The largest class of molluscs is the Gastropoda class, which comprises aquatic or terrestrial species. They are present both in freshwater and seawater. The pond snail is also called Lymnaea (a gastropod). It has a spiral shell and is only present in freshwater in all of its species. The gastropods that are generally referred to as temple shells are conchs. Pila is a genus in the Gastropoda class. It is found mainly in bodies of freshwater, such as wetlands, pools, lakes and rivers. They are also adapted for land habitat survival. It's also called the apple snail because of its shape. Being a gastropod, it has a coiled shell that is peculiar.
Pila is a genus of large freshwater snails, or apple snails, belonging to the Ampullariidae tribe. The genus Pila has about 30 species. It's usually referred to as the apple snail. The scientific name for the apple snail is Pila scutata. It is the largest snail in freshwater. It is commonly found in pools, pools, tanks, lakes and freshwater ponds.
So, the right one is option B-Apple snail.
Note: The presence of twisted visceral mass and nervous system during their embryonic development is a distinguishing characteristic of the Gastropoda class. Snails, slugs, and conchs are included. These molluscs have a head with eyes that are well-developed.