Step 1: Classification of Vitamins
- Water-soluble vitamins: Vitamin B-complex, Vitamin C.
- Fat-soluble vitamins: Vitamins A, D, E, K.
Step 2: Matching with Diseases
- Vitamin A is fat-soluble and is related to night blindness, not xerophthalmia.
- Vitamin B\(_6\) is water-soluble, but scurvy is caused by Vitamin C deficiency.
- Vitamin D is fat-soluble and deficiency leads to rickets.
- Vitamin C is water-soluble, not fat-soluble.
Thus, the correct answer is Vitamin D – Fat soluble – Rickets.
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