Which of the following sentences, if placed before sentence 1, would best introduce the topic to the audience and help set up the main argument of the passage?AThe Centers for Disease Control and Prevention (CDC), originally known as the Communicable Disease Center, is a federal agency that was founded in 1946.BAccording to a recent report from the Centers for Disease Control and Prevention (CDC), Americans are not getting enough sleep.CIn 2015 the Centers for Disease Control and Prevention (CDC) issued a study indicating that wearable technology such as fitness trackers are not hazardous to people’s health.DWhen I woke up the other morning and checked my fitness tracker, I was disappointed to see that I only got five hours of sleep the night before.EA recent study by researchers from Korea and the United States examined the accuracy of a number of different fitness trackers that are commonly used to measure sleep patterns.