Answer:
The answer is "Option B"
Explanation:
A way to roll down from slope with the help of an ice ax is called glissades, and when we look at an image for a long time, our eye makes small motions of your head, this process is known as Troxler or the Troxler effect.
- It is also known as an optical illusion, that affects visual perception.
- When an unchanging sensation away from the fixation point fades away and stops, if you set a certain point for even a short time, that's why it is false.