A perceptual set is a a. tendency to fill in gaps to perceive a complete, whole object. b. readiness to perceive an object in an unfairly negative fashion. c. tendency to view objects higher in our field of vision as closer. d. mental predisposition that influences what we perceive. e. conditioned response to a perceived event.

d)

Explanation:

In psychology, the term perceptual set refers to the tendency to perceive things in a certain way. This means that we tend to notice only certain aspects of an object or situation while ignoring other details according to our own past experiences or prejudices or expectancies.

Thus, we can conclude that a perceptual set would be d) mental predisposition that influence what we perceive.

Note:

a) Perceptual sets do not refer to the tendency to fill in gaps to perceive a complete object but rather to the fact that we do not perceive the object in its completeness.

b) Perceptual sets do not imply an unfairly negative perception but rather to not perceive things as a whole.

c) Again, perceptual sets don't refer to field of vision.

e) Perceptual sets are not necessarily conditioned responses.