Answer: C. His innocence to him, in a confused way, was impossible to prove, as his sharpness was known.
Step-by-step explanation:
The line from "A Piece of String" that illustrates Matre Hauchecome's conflict is:
C. His innocence to him, in a confused way, was impossible to prove, as his sharpness was known.
In this line, it is evident that Matre Hauchecome is struggling with the fact that even though he is innocent, proving his innocence is difficult due to his reputation for being sharp or clever. This internal conflict arises when he is falsely accused of stealing a pocketbook, and his innocence is questioned despite his efforts to explain himself.