Why is it essential to know your vehicle's blind spots?

Answer: B — To avoid collisions when changing lanes

Understanding your vehicle's blind spots is crucial primarily to avoid collisions when changing lanes. Blind spots are areas around your vehicle that cannot be seen in your rearview or side mirrors. If you are unaware of vehicles or obstacles in these areas while maneuvering, you could inadvertently cause an accident. By being aware of your blind spots, you can effectively check for approaching vehicles before changing lanes or merging, significantly reducing the risk of a collision. It promotes safer driving practices, encourages the habit of looking over your shoulder, and reinforces the importance of using mirrors and signals when changing position on the roadway. This knowledge helps foster a culture of safety on the road, not just for you but for all road users. While aspects like fuel efficiency, vehicle performance, and overall driving experience are important, they do not address the immediate safety concerns associated with blind spots.