Final answer:
Option 4, convergence and accommodation, are the pair of cues most effective for perceiving depth and distance consistently regardless of how far away objects are.
Step-by-step explanation:
The pair of cues that are consistently effective regardless of distance are convergence and accommodation (Option 4). These cues are helpful in perceiving depth and distance. Convergence is a binocular cue that involves the inward movement of the eyes when we focus on nearby objects. Accommodation refers to the change in the lens shape in our eye to focus on objects at different distances. These cues work together to help us estimate the distance of an object regardless of how far away it is.
In contrast, other pairs mentioned, such as occlusion and relative size, texture density and aerial perspective, or binocular disparity and motion parallax, may be less consistent across different viewing distances. For example, binocular disparity and motion parallax are more effective at closer distances. Thus, for consistency across all distances, convergence and accommodation are the most reliable cues.