Which image represents the radial symmetry?

What type of symmetry is this coral?

Invertebrate animals have this kind of skeleton, which have a fluid-filled compartment,

This skeleton does not grow with the animal, so they need to leave this skeleton and produce a new one. Is on the outside.

Eight (8) legs used for walking and grasping:

Mostly live in water, have 3 or more pairs of legs:

Largest group, have 6 legs, undergo metamorphosis:

Have the most appendages (any of the homologous body parts that may extend from a body segment), 1 or 2 pairs per segment:

An endoskeleton animal is vertebrate or invertebrate?