Option 1: (C), (B), (A), (D) -> Creates a disconnected sentence starting with "a revolution" without proper context.
Option 2: (B), (D), (C), (A) -> Results in "brought about the invention of the printing press by" which is grammatically incomplete and awkward.
Option 3: (B), (A), (D), (C) -> Places "literacy" immediately after "brought about" which breaks the logical flow and meaning.
Option 4: (D), (B), (C), (A) -> Forms the complete sentence: "The invention of the printing press by Johannes Gutenberg in 1440 brought about a revolution in accession to knowledge and spreading literacy, thus marking a turning point in history."
Hence, Option 4: (D), (B), (C), (A) -> This sequence creates a grammatically correct and logically coherent sentence that properly introduces the subject (the invention), identifies the inventor and date, and describes the historical impact in a flowing manner -> correct