Which of the following pairs of organisms is in a mutualistic relationship?

The pair of organisms that is in a mutualistic relationship is the Hermit crab and Sea anemone. In this relationship, the hermit crab provides protection and transportation for the sea anemone, while the sea anemone provides the hermit crab with defense against predators. The sea anemone attaches itself to the shell of the hermit crab and uses its stinging tentacles to deter potential predators. In return, the hermit crab provides the sea anemone with food and a means of transportation to new food sources. Therefore, the hermit crab and sea anemone have a mutualistic relationship because both organisms benefit from the interaction.