Read each of the following passages and answer the items that follow. Your answers to these items should be based on the passages only.
As the tortoise tucks its feet and head inside the shell and will not come out even though you may break the shell into pieces, even so the character of the man who has control over his motives and organs, is unchangeably established. He controls his own inner forces, and nothing can draw them out against his will. By this continuous reflex of good thoughts and good impressions moving over the surface of the mind, the tendency to do good becomes strong, and in consequence, we are able to control the Indriyas or sense organs.
Which of the following statements would be most correct in explaining the metaphorical meaning of ‘break the shell into pieces?