Final answer:
The line 'I don't want to stain my hands with blood. Just with lather, and nothing else.' represents the resolution of the barber's inner conflict in 'Lather and Nothing Else.'
Step-by-step explanation:
The resolution of the barber's inner conflict in "Lather and Nothing Else" is best represented by the line that reflects his decision not to give in to murder, despite the temptation and justification available to him. The most fitting line would be: "I don't want to stain my hands with blood. Just with lather, and nothing else." This demonstrates his resolution to maintain his identity as a barber and not become a murderer, even though the person in his chair, Captain Torres, is responsible for many deaths himself.