Adelaide notices a flicker of motion out of the corner of her eye as she hurries down a dimly lit alley late at night. Sydney deciphers a complex wiring diagram under the bright glare of her desk lamp. Adelaide's vision is driven mainly by ________. Sydney's vision is mainly using ________.

Question

Quizplus · Accepted Answer

Adelaide is in a dimly lit alley, which means there is low light. In low light conditions, the rod cells in the eyes are more active, which means Adelaide's vision is mainly using rods. On the other hand, Sydney is looking at a wiring diagram, which requires her to distinguish small details and color differences. This means she is using her cones, which are responsible for color vision and visual acuity. However, since the question asks for the main type of vision used, the correct answer is D, rods, since rods are more active in low light conditions and provide a better general picture of the environment.

Adelaide Notices a Flicker of Motion Out of the Corner