Correct Answer: Vitamin-A

Solution : The correct answer is Vitamin-A .

Night blindness is caused by a deficiency of Vitamin-A. In this condition, the eye cannot visualize under dim light conditions; i.e., vision is unimpaired in broad daylight, but it is unclear under low light conditions. Green leafy vegetables, fish, dairy products, etc., are rich sources of Vitamin-A. Biologically, Vitamin-A is known as retinol.