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The correct answer is; B. fish

Fish have a single loop circulation.

Single loop circulation is the type of circulatory system that occur in fishes. Single loop circulation is simple. There is passage of blood only once through the heart in each complete cycle of the body. The blood flows from the heart through the gills, through the body and back to the heart. In single loop circulation, blood pressure is limited because of the frail nature of the tiny capillaries in the gills.



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The animal that has a single-loop circulation is the fish.

Single-loop circulation

Simple circulation: It is the one in which the blood passes through the heart only once. In this case, the heart only has contact with blood rich in carbon dioxide, which is pumped to the gills where it undergoes the oxygenation process. It is a type of circulation found in animals that have gill breathing.

With this information, we can conclude that the animal that has a single-loop circulation is the fish.

Learn more about single-loop circulation in brainly.com/question/1122978

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