What is the recommended additional caloric intake for pregnant women in their third trimester?

The correct additional caloric intake for pregnant women in their third trimester is approximately 452 calories per day. This figure is derived from nutritional guidelines that emphasize the increased energy demands during this stage of pregnancy, which is vital for the growth and development of the fetus.

In the third trimester, a pregnant woman's body undergoes significant changes to support the growing baby, leading to higher caloric requirements compared to the earlier stages of pregnancy. The suggested intake of around 452 calories reflects a balance between meeting these demands and ensuring that nutritional needs are adequately met for both the mother and the developing fetus. This caloric increase is essential for providing the extra energy required for fetal growth and for preparing the mother's body for labor and breastfeeding.

While the other options provide different caloric numbers, they do not align as closely with the established recommendations for the additional caloric needs during this critical period of pregnancy.