Answer:
The correct answer to the following question will be Option A (Retinal disparity).
Explanation:
- Retinal variation has become one of the signals a person uses to perceive distance.
- In particular, it includes the use of certain eyes and corresponds to the disparity between all the views where each eye provides such an object, entity or scenario in question.
So, that'll be the skill of Narmeen to determine the board's size.