When riding, your clothing should be protective and:

Answer: D — Completely cover arms and legs

When riding a motorcycle, it is important to wear clothing that provides protection in case of an accident. The correct answer "D. Completely cover arms and legs" is essential for motorcycle safety because wearing clothing that covers your arms and legs can help minimize injuries in case of a fall or collision. By covering your arms and legs, you can protect your skin from abrasions, cuts, and burns that can occur during a motorcycle accident. Additionally, covering your skin can also provide some protection from the elements, such as the sun, wind, and rain, making your ride more comfortable and safer. Therefore, it is crucial to choose motorcycle gear that completely covers your arms and legs for your safety while riding.