What are the two most frequent causes of motorcycle accidents?

Answer: B — Failure to yield the right-of-way and making a left turn

The two most frequent causes of motorcycle accidents are indeed failure to yield the right-of-way and making a left turn. Motorcyclists often find themselves in situations where other drivers may not see them or do not properly gauge their speed, leading to failure to yield. Additionally, left turns pose a significant risk, as many collisions occur when a vehicle turns across the path of a motorcycle that is proceeding straight. Understanding this is crucial for safe riding practices. Motorcyclists must be particularly vigilant at intersections where left turns are common, both from their own vehicle and from other vehicles. The dynamics of a motorcycle are different from those of larger vehicles, meaning that the consequences of such accidents can be much more severe. This underscores the importance of defensive driving and being aware of one's surroundings to avoid these high-risk scenarios.