Read the following summary of “Mathematician Katherine Johnson at Work.” Katherine Johnson was part of a pool of African American women hired to work as mathematical researchers for NACA in 1953. Katherine was quickly chosen to work with engineers because she set herself apart as a strong leader and a gifted mathematician who was eager to learn. Katherine worked more than thirty years for NACA, which later became NASA. She also worked on more recent projects, like the space shuttle program. In 2015, Katherine was awarded with the highest honor to be presented to a U. S. civilian, the Presidential Medal of Freedom.

Which key detail should be included to complete the most effective summary?

Katherine thought that more young people should become scientists.

Katherine believed that her strength was in working a problem backwards to find the most accurate solution.

Part of NACA was the Guidance and Navigation Department.

In this time, she made important contributions to important space missions, including the Apollo 11 flight to the moon.