What is a simple invertebrate animal with radial symmetry. they can reproduce either asexually by budding or sexually through external fertilization called spawning?

The correct answer is Echinodermata.
Echinodermata is a group of marine animals with the characteristic radial symmetry (usually five-point). Echinodermata includes animals known as sea stars, sea urchins, sand dollars, and sea cucumbers, as well as the sea lilies. They reproduce through the process of spawning (releasing the eggs and sperm into water).

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