What should be done if the battery terminals show any signs of corrosion?

Answer: C — Clean the terminals and secure connections

If the battery terminals show any signs of corrosion, it is crucial to clean the terminals and secure the connections. Corrosion can hinder the electrical connection between the battery and the vehicle's electrical system, leading to poor performance, difficulty starting the vehicle, and potential electrical failures. Cleaning the terminals removes the corrosive build-up, ensuring a good connection and allowing the battery to function properly. Additionally, securing the connections is important to prevent future issues, as loose connections can also contribute to poor electrical performance. Regular maintenance, including checking and cleaning battery terminals, is essential for the reliability of the vehicle. Taking proactive steps to address corrosion helps to avoid more serious electrical issues down the line.