It is evident that the lion felt a) it was his duty to save the mouse. b) that the mouse was too small to eat. c) he may need from the mouse one day. d) he would never need from a mouse.

D). He would never need help from a mouse.

Explanation:

The lion was filled with so much pride and honor that he failed to recognize anyone's worth or efforts. It is due to this trait, it becomes evident that he(the lion) felt that 'he would never need help from a mouse' whom he considered inferior to him. He was so overpowered by his excessive pride and pleasure that he treated every other creature as disciple or adherent to him. Thus, it becomes visible that he feels he would not need help from a small creature like a mouse. Therefore, option D is the correct answer.