Which of the following are common causes of low birth rate?

• A. Being a twin, born preterm, and having a teen mom
• B. Regular exercise during pregnancy
• C. Adequate prenatal care
• D. Balanced nutrition

Answer: (A)

Low birth weight happens when a baby doesn’t grow well in the womb. The factors listed here that best explain why it’s common are being a twin, being born preterm, and teenage motherhood. Twins share the womb and nutrients, so each baby may get less growth opportunity, increasing the risk of a lighter birth weight. When birth happens before full term, there’s less time for weight gain, so the baby is more likely to have low birth weight. Teenage mothers are at higher risk for low birth weight due to factors like physiological immaturity and, at times, less access to consistent prenatal care or good nutrition, which can affect fetal growth.

The other statements describe positive health practices that support healthy fetal growth and reduce risk, such as regular exercise during pregnancy, adequate prenatal care, and balanced nutrition. These help monitor and promote proper development rather than contributing to low birth weight.