The last chapter of the book "1984" by George Orwell is a dramatic conclusion to the story, revealing the fate of the main character Winston Smith after he has been captured, tortured, and brainwashed by the totalitarian rulers of the dystopian world of Oceania. The correct option is number 3: Winston shouts "2+2=4!" before being vaporized. In the final scene of the book, Winston is shown sitting in a café, having accepted the Party's propaganda and submissive to the regime. He sees a familiar face, an antagonist from earlier in the novel, and begins to feel hope and rebellion. But suddenly, he senses the presence of the Thought Police and realizes that he is completely broken and controlled by the Party. He knows that he will be caught and killed but continues to cling to his unshakeable belief in the objective truth and refuses to be swayed by the Party's lies. Winston's defiant confession that "2+2=4" is a powerful moment that symbolizes his ultimate triumph over the Party's brainwashing and the strength of human reason and dignity. Even though he knows that he will be punished for his dissent, he refuses to compromise his integrity and submits himself to the inevitable fate of being vaporized and erased from history. This final act of courage and defiance reveals the depth of Winston's character and serves as a warning to the reader about the dangers of totalitarianism and the importance of preserving freedom and truth. Overall, the last chapter of "1984" is a poignant and unsettling conclusion to the novel, leaving the reader with a sense of dread and apprehension. It showcases the power of the Party's propaganda and the extent to which it can control and manipulate the minds of its citizens. It also highlights the importance of critical thinking and the ability to resist the tyranny of authoritarianism.