What conclusion can be drawn about the us economy ?

During the periods of 2000 to 2009-10, the world suffered a huge economic setback that was known as the Great Recession, which, according to economists and experts, was the biggest economic collapse since the Great Depression. It affected the U.S economy, but also the world at large. This recession happened because of the collapse of the U.S real-estate market and the U.S mortgage crisis of 2007-2009, as a response to the financial crisis of 2007-2008. After this great collapse of the economy, in 2010 there was a slight recovery but then this recovery decreased in 2011. That is exactly what is shown in this graph. For this reason, the correct answer is B: the economy suffered a setback in 2009 before rebounding in 2011.