Step 1: Understanding the Question:
The question is based on a verbal analogy where we need to identify the relationship between the first pair (Eye and Myopia) and apply the same logic to the second pair (Teeth and the missing word).
Step 2: Detailed Explanation:
Analyzing the First Pair: Myopia is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry. It is specifically a medical ailment or a condition that affects the Eye. Thus, the relationship is "Organ : Disease/Condition".
Analyzing the Third Word: The third word is "Teeth". We need to find a disease or condition from the options that specifically affects the teeth or the gums supporting them.
Evaluating Option (A) Pyorrhoea: Pyorrhoea, also known as periodontitis, is a serious gum infection that damages the soft tissue and, without treatment, can destroy the bone that supports your teeth. It is directly associated with dental health.
Evaluating Option (B) Cataract: A cataract is a clouding of the normally clear lens of your eye. This is an eye disease, which would fit the first pair but not the second.
Evaluating Option (C) Trachoma: Trachoma is a bacterial infection that affects your eyes. It's caused by the bacterium Chlamydia trachomatis. Again, this belongs to the eye category.
Evaluating Option (D) Eczema: Eczema is a condition that makes your skin red and itchy. It is a skin disease.
Evaluating Option (E) Psoriasis: Psoriasis is a skin disease that causes red, itchy scaly patches, most commonly on the knees, elbows, trunk and scalp.
Step 3: Final Answer:
Since Myopia is a disease of the Eye, and Pyorrhoea is a disease of the Teeth/Gums, option (A) is the correct analogy completion.