During a class demonstration, Alex is surprised to learn that he has an area in his visual field where he cannot see objects, known as a blind spot. What anatomical feature of the eye is responsible for this phenomenon?

• A. The presence of too many cones in the central fovea
• B. The absence of photoreceptors where the optic nerve exits the eye
• C. The uneven distribution of rods throughout the retina
• D. The overabundance of ganglion cells in the macula

Answer: (B)