How do candidates indicate their choice during the examination?

Candidates indicate their choice during the examination by clicking the option with the mouse. This method is commonly used in computerized testing environments where candidates interact with the exam software. By using a mouse to select their answers, candidates can easily navigate through the questions and make their selections efficiently. This approach enhances the overall user experience by providing a visual and interactive method for answering questions, which is especially important in assessments that require precision in selecting answers. The other methods listed, such as writing on paper or speaking their choice, are not applicable in the context of most modern examinations, which are designed to be taken on a computer.