The correct answer to the question is:
A. a blind spot
Explanation:
1. The part of the retina where the nerve endings come together to form the optic nerve is known as the optic disc or optic nerve head.
2. This area lacks photoreceptor cells (rods and cones) that are responsible for detecting light and converting it into neural signals.
3. Due to the absence of these photoreceptor cells, the optic disc creates a blind spot in our field of vision.
4. The brain compensates for this blind spot by filling in the missing information from the surrounding visual information, so we usually do not notice it in our day-to-day activities.
