Recommended daily intake of proteins for a moderately active woman is

1. The question asks for the Recommended Daily Intake (RDI) or Recommended Dietary Allowance (RDA) of proteins for a moderately active woman. 2. Protein requirements vary based on factors like age, sex, weight, activity level, and health status. 3. A widely accepted international guideline (like the US RDA) for adult women (non-pregnant, non-lactating) is approximately 0.8 grams of protein per kilogram of body weight per day. 4. For a reference woman weighing around 57-58 kg, this calculation yields about 46 grams per day. 5. Indian Council of Medical Research (ICMR) recommendations around that time might have been slightly different (e.g., 1g/kg reference body weight), potentially suggesting around 50g for a 50kg woman, but 46 g (Option D) is a standard international benchmark and the closest plausible value among the options provided.