The question is regarding the recommended daily intake of proteins for a moderately active woman.

Option 1 suggests 30 g which is lower than needed. Option 2 suggests 37 g which again falls short of the required intake. Option 3 proposes 40 g, which is still short of the recommended intake.

Option 4 recommends 46 g which is correct. According to the U.S. Recommended Dietary Allowance, moderately active women, aged 19-30, need around 46 grams of protein each day. The amount can vary slightly depending on weight and activity level, but 46 grams is a general guide. Hence, the correct answer is option 4.