Answer: A.) Water
Explanation: The aqueous humor is a clear fluid that fills the space between the cornea and the lens of the eye. It helps to maintain the shape and pressure of the eye, as well as to provide nutrients and oxygen to the tissues. The aqueous humor is mostly made up of water, which accounts for about 98% of its volume.
The remaining 2% consists of various substances, such as salts, sugars, amino acids, and proteins. The proteins in the aqueous humor are mainly albumin and immunoglobulins, which have roles in immune defense and inflammation. The lipids and gases in the aqueous humor are negligible, as they are either dissolved or diffused out of the fluid.