Answer:
d. linear perspective
Step-by-step explanation:
According to a different source, these are the options that come with this question:
a. visual acuity
b. texture gradient
c. retinal disparity
d. linear perspective
Linear perspective refers to a way in which depth is created. This term is particularly employed by artists who create an illusion of depth on a flat surface. This perspective leads all parallel lines to be lost in a single vanishing point on the horizon line. In this example, Gina is using the linear perspective cue to understand the depth of the scene she is observing.