Answer: B.sea anemone
Step-by-step explanation:
Sea anemones are the marine animals which belongs to the phylum Cnidaria. They range in size from one centimeters to two meters in diameters. They attach themselves to the rocks and hard surfaces or even in the burrowing mud and sand.
It exhibit stinging tentacles which helps in defense from the predator and capturing the prey. These tentacles release toxic substance. These tentacles may pierce the skin of the animals and inject the poisons.