Which of the following actions should be avoided when storing a motorcycle for winter?

Answer: B — Leaving it uncovered

When storing a motorcycle for winter, leaving it uncovered should be avoided because exposure to the elements can lead to significant damage. An uncovered motorcycle is susceptible to moisture, which can cause rust and corrosion on metal parts, electrical connections, and the engine. Additionally, debris like leaves and dirt can accumulate in sensitive areas, potentially leading to clogs and other issues when it comes time to ride again. In contrast, using a battery tender helps maintain the battery's charge, which is essential for ensuring the motorcycle is ready to go when spring arrives. Filling the gas tank can prevent moisture buildup within the tank and fuel lines, while using a protective cover provides a barrier against environmental hazards, helping to keep the motorcycle in optimal condition.