Which factor could indicate a high-risk pregnancy?

A multiple gestation, such as carrying twins or triplets, is a significant factor that indicates a high-risk pregnancy. This is due to the increased demands placed on the mother's body, which can lead to complications such as gestational diabetes, preeclampsia, preterm labor, and other issues that may arise from the added stress of multiple fetuses. Each additional fetus increases the risk of these complications, making close monitoring and specialized prenatal care essential to ensure the health of both the mother and the babies.

In contrast, a maternal age of 25 is generally considered to be within a normal range for pregnancy and typically does not contribute to high-risk classification. Normal weight gain during pregnancy is also indicative of a healthy pregnancy, as it aligns with the nutritional needs of both the mother and the developing fetus. Prior successful pregnancies indicate experience and may suggest lower risk, provided there were no complications in those pregnancies. These factors contribute to a lower likelihood of complications compared to situations like multiple gestation.