Final answer:
Objects that are lower in the field of vision will be perceived as close. The brain uses the relative height in the field of vision to determine the distance of objects. a) Lower
Step-by-step explanation:
One way our brains can figure out how far something is in our field of vision is by noting how high in the field that object appears. Objects that are lower in the field of vision will be perceived as close.
To see what we mean, take a pen and hold it a few inches in front of your face. Look at it first with one eye (closing the other) and then switch eyes. Note how the pen seems to shift relative to objects across the room. Now hold the pen at arm's length: the shift is less. If you play with moving the pen for a while, you will notice that the farther away you hold it, the less it seems to shift. Your brain automatically performs such comparisons and gives you a pretty good sense of how far away things in your immediate neighborhood are.
The apparent size of an object perceived by the eye depends on the angle the object subtends from the eye.