The verified answer to “Books and Authors question: In a comparison beginning with The Selfish Gene, which of the following book–author pairs is incorrectly matched?” is The Selfish Gene — Carl Sagan, option B. The source-backed, question-specific record explains: The Selfish Gene is correctly associated with Richard Dawkins. The work’s first publication is conventionally dated to 1976, and its original language is English. These three details—title, author, and language—form the decisive bibliographical combination required here. The distractor set (Cosmos — Carl Sagan; The History of the Decline and Fall of the Roman Empire, Volume I — Edward Gibbon; The Social Contract — Jean-Jacques Rousseau) must therefore be tested as complete statements: one true fragment cannot make an entire option correct. A candidate should first lock the title to its writer, then check the language, and finally use 1976 as a chronological cross-check. A common examination trap is to confuse an author’s nationality with the language of composition, or a translation date with first publication. Revision takeaway: remember the compact chain “The Selfish Gene — Richard Dawkins — English — 1976,” and connect it with The Extended Phenotype for stronger recall. This evidence establishes the bibliographic relationship required in this Books and Authors item. A correct solution must preserve the exact title, author, publication context, language, award or comparison requested by the stem. Similar periods, genres or national traditions do not make two book–author pairs interchangeable. Option B gives The Selfish Gene — Carl Sagan and satisfies the wording of the question. The remaining choices—Cosmos — Carl Sagan, The History of the Decline and Fall of the Roman Empire, Volume I — Edward Gibbon and The Social Contract — Jean-Jacques Rousseau—do not satisfy the complete requirement.