Which of the following are indicators of a failing battery in a motorcycle?

Answer: B — Slow engine cranking, dim lights, and corrosion on terminals

The indicators of a failing battery in a motorcycle include slow engine cranking, dim lights, and corrosion on terminals. When a battery is not functioning properly, it may not hold a charge effectively, leading to a slow cranking sound when starting the engine. This sluggishness occurs because the battery is not supplying enough power to the starter motor. Dim lights can also be a symptom, as insufficient battery voltage affects the electrical systems in the motorcycle, resulting in lower light output. Additionally, corrosion on the battery terminals can impede the flow of electricity, hampering battery performance and leading to starting issues or electrical problems. Other options presented do not relate to battery failure. For example, frequent oil leaks are more indicative of issues within the engine or oil system rather than the battery. Uneven tire wear points towards alignment or suspension problems rather than electrical issues. Lastly, smoke from the exhaust usually points to engine malfunctions, such as burning oil or incomplete combustion rather than indicating battery condition. Thus, the combination of slow cranking, dim lights, and corrosion on terminals provides clear signs that the battery may be failing.