Read the excerpt from life on the mississippi.

'i—i—don't know.'

'you—you—don't know? ' mimicking my drawling manner of speech. 'what do you know? '

'i—i—nothing, for certain.'

what is the significance of bixby mocking the narrator’s speech?
it reflects his low opinion of the narrator’s intelligence and social standing.
it shows his desire to make others feel inferior.
it suggests a deep insecurity within bixby’s character.
it illustrates bixby’s wish that the narrator speak without a drawl.

Explanation:

Life on the Mississippi is a memoir of Twain's personal experiences as a steamboat pilot on the Mississippi River. As a kid, he talks his way onto the Paul Jones, a steamer, where he pays the pilot, Mr. Bixby, $500 to show him all that he knows.  

Twain conveys a resonating history of the Mississippi River, specifying its biology and the early endeavors by travelers to graph the waterway's regularly slippery waters.

Twain utilizes diverting individual stories to portray life on the Mississippi. He portrays little shore towns, vivacious talkers, and the casualty of a wildcat.  

The greater part of all, Twain expounds on his affection for steamboats. He was himself a talented pilot, and he figured out how to peruse the flows of the famously whimsical Mississippi River. His initial instruction as a pilot includes probably the best material in the memoir.

you did not put the article. so i cannot answer the question.