What percentage of pregnancies result in singleton births when considering IVF treatments?

In the context of in vitro fertilization (IVF) treatments, the percentage of pregnancies that result in singleton births is a significant statistic reflecting the outcomes of assisted reproductive technology. The correct choice, 61.7%, is derived from clinical data that indicate this figure is representative of successful IVF cycles where a single embryo is transferred and results in a live birth.

This percentage highlights the trend in IVF practice where single embryo transfer has become more common due to the increased risks associated with multiple gestations, such as preterm birth and low birth weight. By focusing on single embryo transfers, fertility specialists aim to optimize both maternal and neonatal health outcomes.

The various options reflect different possible statistics regarding birth outcomes after IVF, but the 61.7% figure is specifically grounded in current clinical practice and data, making it the most accurate and relevant choice among them.