What is one major risk of not checking blind spots while riding?

Answer: C — Colission with unseen vehicles

Failing to check blind spots while riding is a significant risk because it can lead to a collision with unseen vehicles. Blind spots are areas around your motorcycle that are not visible to you in mirrors. If a vehicle is occupying this space, you won't be aware of its presence unless you physically turn your head to check. This oversight can have serious consequences, especially when changing lanes or merging into traffic, as you could inadvertently cut off another vehicle or be struck by one you didn’t see. This scenario emphasizes the importance of situational awareness while riding. Regularly checking blind spots allows a rider to make safer decisions by ensuring all surrounding traffic is accounted for before making maneuvers. It is a critical practice for maintaining safety on the road.