**Core Concept**
In late pregnancy, a woman who performs moderate work requires adequate energy intake to support fetal growth, maternal health, and physical activity. The energy requirement is influenced by the basal metabolic rate (BMR), the energy expended during physical activity, and the additional energy needed for fetal growth and maternal bodily functions.

**Why the Correct Answer is Right**
The energy requirement in late pregnancy is estimated to be around 20-30% higher than the non-pregnant state. This is due to the increased energy needs of the fetus, placenta, and maternal bodily functions. Moderate work, such as household chores or light physical activity, adds to this energy expenditure. The recommended daily energy intake for a pregnant woman performing moderate work is approximately 2500-2800 kcal/day. This can be achieved through a balanced diet that includes protein-rich foods, complex carbohydrates, and healthy fats.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not account for the increased energy needs of late pregnancy and moderate work.
* **Option B:** This option is incorrect because it is too low for a pregnant woman performing moderate work, and may lead to inadequate energy intake for fetal growth and maternal health.
* **Option C:** This option is incorrect because it is too high and may lead to excessive energy intake, potentially contributing to gestational diabetes and other complications.

**Clinical Pearl / High-Yield Fact**
A pregnant woman performing moderate work should aim to increase her energy intake by 250-300 kcal/day above her pre-pregnancy needs. This can be achieved through a balanced diet that includes protein-rich foods, complex carbohydrates, and healthy fats.

**Correct Answer:** D.