An abnormal condition of the eye characterized by clouding of the lens

• A. Cataracts
• B. Abdominal body cavity
• C. Arthritis
• D. Asthma

Answer: (A)

Knowledge of eye conditions that involve clouding of the lens is tested here. Cataracts occur when the crystalline lens becomes cloudy, which blurs vision and creates glare because light cannot pass through clearly. This directly matches the description in the question. The other options refer to conditions in different parts of the body or systems: the abdominal body cavity is a body region, arthritis affects joints, and asthma affects the airways. Therefore, cataracts is the best answer. In real life, cataracts are most common with aging and can be treated with lens replacement surgery when vision is affected.