It's D your choice as commas, split an explanation while the conjunction 'but' links two sentences. No need to separate them by using a semicolon.
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<u>Answer:</u>
The modernist work which makes use of the "stream of consciousness" is the book written by "sound and the fury" which is composed by an American writer William Faulkner. A number of fictional forms are used which includes the stream of awareness. The year which it was written in the year 1929. The "stream of consciousness" is used because of the better plot construction. The author makes the readers understand the mind and the thought process of the character.