a seastar can hold tighty to the surface it is touching because of the :?

Question

a: sieve in the madreporite
b: andoskeleton
C: suction in its tube feet
d: eye spot
which answer is correct ?

Answer 1

C; each of the thousands of tube feet create a small vacuum that adheres it to the surface of whatever it's on. The small surface area of each one ensures a good seal, while the sheer number of feet ensures a good grip.