PLEASE HELPPPPP (1 pt) Which of the following is a difference in nervous systems between a hydra and a flatworm? A. One responds to stimuli in the environment and the other does not. B. One has nerve cells with axons and the other does not. C. One is a loose network of connected neurons without centers of integration, and one has ganglia in which integration can occur. D. One has a brain with a forebrain, a midbrain, and a hindbrain, and the other has ganglia in which integration can occur.