<span>B. This fatal disease attacks the peripheral nervous system. The immune system attacks the sheath that covers the nerves in the spine and brain. The cause is unknown and is considered an autoimmune disease. Chemotherapy and steroids are often used to treat the symptoms.</span>
Answer:
The correct answer is a. retinal disparity
Explanation:
Humans have two eyes that see the image at slightly different angles and for perception depth it is important to see the object from both the eyes. Retinal disparity is the way which helps in depth perception.
In this situation, the image seen by both the eyes at different angles is processed by the brain and after processing it is seen as a single image with the correct depth of the image. In many situations retinal disparity comes into play like diving.
Therefore if a person lacks an eye then retinal disparity is the visual cue that would be lacked by him.
What you have on the bottom for your question should be the correct answers for each. Was that not right?
