Final answer:
The major stylistic difference between Faulkner's Nobel Prize speech and his novel 'As I Lay Dying' is the use of sophisticated vocabulary in the speech, as opposed to the stream-of-consciousness style in his writing. Option B is the correct answer.
Step-by-step explanation:
The major difference in style between William Faulkner's Nobel Prize acceptance speech and his writing in As I Lay Dying is not as readily attributable to stream of consciousness, use of a numbered list, or detailed descriptions. Rather, it is the use of sophisticated vocabulary in his speech as opposed to the style of his novels.
Noted for the stream-of-consciousness technique and non-linear plotting in his modernist novels, such as The Sound and the Fury, Absalom, Absalom!, and As I Lay Dying, Faulkner's writing encapsulates the human experience through multiple perspectives, often delving into the internal conflicts of the human heart.
However, his Nobel Prize speech, delivered in 1950, contained a more formal and sophisticated vocabulary, as it addressed the young writers of America and reminded them to focus on 'the problems of the human heart in conflict with itself', which he considered the essence of good writing.
Therefore, the correct answer to the question is: b. he uses sophisticated vocabulary in the speech.