Which statement best expresses the central idea of the passage? A NASA started out as the organization NACA, which was founded to do flight research. B NACA was founded in 1915 to help the US keep up with other countries in flight technology. C Many people are familiar with the organization NASA. D The organizations NASA and NACA have similar names. You’ve likely heard of NASA, the National Aeronautics and Space Administration. NASA is the government agency in charge of science and technology related to air and space. But you may not know that NASA used to be an organization called NACA. NASA originally began as as the National Advisory Committee on Aeronautics (NACA), which was founded 1915. By the start of World War I in 1914, the US was falling behind Europe in airplane technology. In response, NACA was founded to conduct research in aeronautics, the science of flight. Decades later, when space research began, NACA became the organization NASA.