The correct answer is B. Cornea.
The cornea is the clear, dome-shaped front part of the eye. It covers the iris, pupil, and anterior chamber. The cornea helps to focus light onto the retina at the back of the eye. It does not have blood vessels, but it does have nerves and lymphatic vessels.
The spleen is a large, bean-shaped organ located in the upper left abdomen. It is part of the lymphatic system, which helps to fight infection. The spleen also filters blood and removes old red blood cells.
The liver is the largest organ in the body. It is located in the upper right abdomen, below the diaphragm. The liver has many important functions, including:
- Metabolizing nutrients
- Producing bile
- Storing energy
- Detoxifying the blood
The cornea is the only organ in the body that does not have blood vessels. This is because it needs to be transparent in order to allow light to pass through to the retina. The cornea is nourished by tears and by diffusion of nutrients from the surrounding tissues.