Final answer:
A pregnant woman needs to increase her intake by approximately 300 calories to account for increased energy need in the second trimester of pregnancy.
Step-by-step explanation:
A pregnant woman needs to increase her intake by approximately 300 calories to account for increased energy need in the second trimester of pregnancy. This extra calorie intake is necessary to support the growing fetus and the mother's increased metabolic needs. It is important for the mother to eat plenty of nutritious foods during pregnancy, taking in enough nutrients for the fetus as well as for herself.