Where fibers from right and left optic nerves decussate to the opposite (left or right) optic tract?

This is the optic chiasm, where the nerves emanating from the eyes cross over to the opposite hemisphere of the brain. This part of the visual system allows for binocular vision, as both hemispheres of the brain receive visual signals from both eyes. This aids in coordination and the ability to see and judge depth.

Ithink the answer is d.