Which of the following organisms exhibits radial symmetry?

flatworm

butterfly

tadpole

starfish

Radial symmetry is symmetry where, no matter what line you cut across the shape you are bisecting (so long as that line goes through the center of the shape), you are left with two similar halves. The only organism on this list which can be divided this way is the starfish, which is your answer.
Hope that helped! =)

B is the correct answer. a and c both do not change the polarity, so the effect wouldn’t be as drastic. Please give this brainliest if this helped!