Question

to gain information on objects we need both eyes for ______. retinal disparity binocular cues proximity convergence

Explanation:

Retinal disparity is the difference in the images seen by each eye, which requires both eyes to perceive depth and gain information about objects. Binocular cues are a broader category, proximity is a monocular cue (uses one eye), and convergence is about eye muscle movement but retinal disparity is more about the visual information from both eyes for object info.

Answer:

A. Retinal Disparity