What lacks respiratory and excretory systems?\nOptions:\n- (A) the Sun\n- (B) insects\n- (C) starfish\n- (D) barnacles\n- (E) ferns\n- (F) water\n- (G) Conifers\n- (H) humans
Let's be accurate as possible. Think before you answer.
(C)
Echinoderms lack respiratory and excretory systems.

Echinoderms are represented by the starfish.

Starfish lack respiratory and excretory systems.

.

Thus, the answer is (C)