What does the term "blind spot" refer to in driving?

The term "blind spot" refers to a specific area around a vehicle where visibility is significantly reduced, making it difficult for the driver to see other vehicles or objects. Typically, these areas exist alongside and behind the vehicle, beyond the reach of the mirrors, and are not visible in the rearview or side mirrors. Knowing where your blind spots are is crucial for safe driving, as it helps drivers check these areas before changing lanes or making turns. Being aware of blind spots enables drivers to take appropriate precautions and avoid accidents, enhancing overall road safety.

The other options suggest concepts that don't accurately capture the meaning of a blind spot. A safe zone is about the space around a vehicle that is free from hazards, while the areas mentioned in the choices related to visibility through mirrors do not encompass the intention or definition of a blind spot, which is specifically about reduced visibility.