Essential elements of critical writing for successful completion of the UPSC exam include a clear thesis statement, coherent structure, and supported arguments. Candidates should articulate their viewpoints logically, ensuring each point transitions smoothly. Incorporating substantial evidence, credible examples, and relevant case studies strengthens arguments and enhances persuasiveness. Addressing counterarguments demonstrates a comprehensive understanding of the topic. Furthermore, proper language usage and grammar are paramount, as they reflect the writer's competency. Developing a strong conclusion that summarizes key points reinforces the essay's overall impact, leaving a lasting impression on evaluators.