Correct Answer: C

Rationale: Folic acid is the most critical nutrient for preventing neural tube defects during pregnancy. Neural tube defects are serious birth defects of the brain and spinal cord. Adequate intake of folic acid before and during early pregnancy can significantly reduce the risk of these defects. Iron, calcium, and vitamin D are important nutrients during pregnancy for other reasons, such as supporting the increased demands on the body for blood production, bone health, and calcium absorption, respectively.

Correct Answer: B

Rationale: The primary goal of health education is to empower individuals with knowledge and skills to make informed decisions and adopt behaviors that lead to improved health outcomes. It focuses on promoting healthy habits, disease prevention, and overall well-being.

Correct Answer: B

Rationale: The World Health Organization recommends exclusive breastfeeding for the first 6 months of a child's life. During this time, breast milk provides all the necessary nutrients for the baby's growth and development, offering protection against infections and supporting optimal health outcomes. After 6 months, complementary foods can be introduced while continuing breastfeeding up to 2 years of age or beyond.

Correct Answer: C

Rationale: Iron is crucial for preventing anemia in pregnant women because it is needed for the production of hemoglobin, the protein in red blood cells that carries oxygen. During pregnancy, a woman's blood volume increases to support the baby's growth, making iron even more critical to prevent anemia, a condition characterized by a lack of healthy red blood cells. Anemia can lead to fatigue, weakness, and other complications for both the mother and the developing baby. Therefore, ensuring an adequate intake of iron-rich foods or supplements is vital for the health and well-being of pregnant women.

Correct Answer: B

Rationale: The World Health Organization (WHO) recommends exclusive breastfeeding for the first 6 months of life. This means that infants should be fed only breast milk (no other liquids or solids) during this period to ensure optimal growth, development, and health benefits.