Because of the poor acuity of the ____visual system signs or warnings that might be read under poorly illuminated conditions have to be____.
A) Cones; smaller
B) Cone; larger
C) rod; smaller
D) rod; larger

Question

Quizplus · Accepted Answer

The rods are responsible for vision in dim light, while cones are responsible for color vision and visual acuity in bright light. Therefore, if the visual system in question has poor acuity (i.e. difficulty seeing fine detail), this suggests that rods are involved. In order to be seen under poorly illuminated conditions, the signs or warnings would need to be larger in size to activate enough rods to be detected.

Because of the Poor Acuity of the ____Visual System Signs