The correct answer is: Option A.
" Difficulty identifying the color of an objetc"
Poor night vision can also be called Nyctalopia or night blindness, and it consists of difficulty to seeing under low light. At night, it is almost imposible to a person distinguish colors of objects in the dark, for example, under the low light condition, with the lack of natural light. The person with this condition cannot see the right color of an object, because it will be always dark.