The correct answer is (c), Vitamin A.
Vitamin A is a fat-soluble vitamin that is essential for vision, growth, and development. It is found in animal products such as liver, eggs, and dairy products, as well as in plant-based foods such as carrots, sweet potatoes, and dark leafy greens.
Night blindness is a condition in which people have difficulty seeing in dim light. It is caused by a deficiency of vitamin A. When there is not enough vitamin A in the body, the retina, which is the light-sensitive tissue at the back of the eye, cannot function properly. This can lead to problems with night vision, as well as other vision problems such as dry eyes and blurred vision.
Vitamin B1, also known as thiamine, is a water-soluble vitamin that is essential for energy metabolism. It is found in a variety of foods, including whole grains, meat, poultry, fish, legumes, and nuts.
Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that is essential for the growth and repair of tissues. It is found in a variety of fruits and vegetables, including citrus fruits, berries, tomatoes, and broccoli.
Vitamin E, also known as tocopherol, is a fat-soluble vitamin that is essential for the protection of cells from damage. It is found in a variety of foods, including vegetable oils, nuts, seeds, and green leafy vegetables.
In conclusion, night blindness is caused by a deficiency of vitamin A. Vitamin B1, vitamin C, and vitamin E are not associated with night blindness.