You enter a completely dark room.At first you see nothing,but as time passes,you can see well enough to avoid bumping into objects and people.You are seeing:
A) with a lot of cones,but very few rods.
B) with your cones only.
C) with a lot of rods and very few cones.
D) equally with rods and cones.

Question

Quizplus · Accepted Answer

In low light conditions, the cones in our eyes become less effective while the rods become more effective. Since we are able to see well enough to avoid bumping into objects and people in a completely dark room, it indicates that we are using our rods which provide us with the ability to see black and white, help us gauge motion, and allow us to see in low-light conditions. Therefore, option C - with a lot of rods and very few cones - is the best choice.

You Enter a Completely Dark Room