Final answer:
The 'blind spot' in vehicles refers to areas that cannot be seen through mirrors when driving; this exists on both sides of a car. The term also refers to a spot in our visual field where no image is formed due to the optic nerve's position in the retina.
Step-by-step explanation:
The area called the blind spot in cars best describes the area of the road that cannot be seen while looking forward or through either the rear-view or side mirrors. This area can exist on both the left and right sides of the vehicle, but for the purpose of the question options, the most accurate description would be option 2) The area to the left side of the car that is not visible in the rearview mirror and option 3) The area to the right side of the car that is not visible in the side mirror. This occurs due to the position of the mirrors and the limitations of our peripheral vision. To ensure safety, drivers are encouraged to turn their heads to check these spots before changing lanes.
The term 'blind spot' can also refer to a specific area in the visual field of our eyes where the optic nerve passes through the retina, creating a spot without any photoreceptors. As such, no image is formed in this small region of the visual field. The human visual system compensates for this by filling in information, often using cues from the surrounding area and the other eye, which has a slightly different view.