In the diagram, which of the animals represents the oldest creatures in terms of evolutionary history?

In the diagram, which of the animals represents the oldest creatures in terms of evolutionary history?

Answer Details

Based on the diagram, the animal that represents the oldest creatures in terms of evolutionary history is option I, which is the jellyfish. Jellyfish are known to have existed for over 500 million years, making them one of the oldest multicellular organisms still in existence today.