Answer:
A.
Step-by-step explanation:
The first option is the best example of Twain's use of rhetoric in order to advance his purpose. In this line, Twain uses the device of repetition when he says "never, never, never." This is a common rhetorical device intended to highlight a particular element of a story. In this case, it is used to show how deeply horrible Twain's experience was. Moreover, it shows that he does not ever want to repeat the experience of getting a Parisian barber again.