What should a candidate do if they accidentally mark more than one answer for a question?

The best course of action is to ensure that only one answer is marked to avoid confusion. When taking an exam, clarity is crucial, and marking more than one answer can lead to ambiguity regarding the candidate's choice. If an answer is marked in such a way that it is uncertain which response is intended, it could be misinterpreted by the evaluator, potentially leading to a loss of points or a misrepresentation of the candidate's understanding of the material.

By clearly marking only one option, the candidate ensures that their answer is unambiguous and can be correctly evaluated. This practice aligns with standardized testing protocols, which typically emphasize the importance of clear and definitive answers to maintain the integrity and reliability of the assessment process. Therefore, candidates should always strive for clarity in their responses, especially in high-stakes testing situations like the Massachusetts State Police Sergeant exam.