Match the nutrient requirement for different categories in Column I with the RDA from Column II.

Column I	Column II
1. Vitamin D IU/d for a lactating woman	A. 440
2. Vitamin A µg/d for a pregnant woman	B. 140
3. Iodine µg/d for an adult woman	C. 600
4. Magnesium mg/d for an adult man heavy worker	D. 900

Correct option is C

The Recommended Dietary Allowances (RDA) in India are specified by the Indian Council of Medical Research (ICMR) for different physiological categories:
1.Vitamin D requirement for a lactating woman → 600 IU/day is recommended to meet maternal and infant bone health needs. Hence, 1 → C.
2.Vitamin A requirement for a pregnant woman → 900 µg/day (as per RDA guidelines). In the given options, the closest match is 900, which is listed as D. Hence, 2 → D.
3.Iodine requirement for an adult woman → 140 µg/day is sufficient for thyroid hormone synthesis. Hence, 3 → B.
4.Magnesium requirement for an adult man (heavy worker) → 440 mg/day is the recommended level to support energy metabolism and muscle function. Hence, 4 → A.
Correct matching: 1 – C (600) 2 – D (900) 3 – B (140) 4 – A (440)
Thus, the correct answer is Option (c).