Candidates can utilize various techniques to articulate their opinions coherently, such as developing a clear thesis statement that presents their viewpoint effectively. Organizing thoughts logically before writing ensures a structured flow. Using tools like outlining can help in arranging arguments and supporting examples coherently. Regularly engaging in mock interviews can help practice articulating thoughts under pressure. Additionally, maintaining brevity while ensuring clarity encourages concise expression in answers, making arguments more persuasive and easier for evaluators to follow.