Final answer:
The maternal death rate in the United States, according to the World Health Organization (WHO), is As of the provided options: b. 10 per 100,000 live births.
Step-by-step explanation:
As of my last knowledge update in January 2022, the maternal death rates in the United States have been a topic of concern. However, the specific rates may change over time, and it's essential to refer to the most recent data for accurate information. Historically, the maternal mortality rate in the U.S. has been higher than in many other developed countries. As of the provided options: b. 10 per 100,000 live births. This figure is an approximation and is intended for illustrative purposes. The actual maternal mortality rate can vary, and ongoing efforts are made to address and reduce maternal mortality through healthcare initiatives, improved access to prenatal care, and research on contributing factors. For the latest and precise statistics, consulting official health organizations like the World Health Organization (WHO) or the Centers for Disease Control and Prevention (CDC) is recommended.