Read the following summary of “Mathematician Katherine Johnson at Work.” Katherine Johnson joined NACA in 1953 as part of a team of African American women who were trained as mathematical researchers. From the beginning, Katherine stood out as a strong leader who was eager to learn. She was also an expert at math calculations and was moved from the research team to work with engineers on flight projects. When the U. S. decided to invest in space exploration, NACA became NASA and Katherine was an important part of the program’s success. She worked on several early space missions, including the first flight to the moon. Later, she contributed to projects like the space shuttle program.

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

Katherine contributed more to the U. S. space program than any other individual who worked for NASA.

After 1962, Katherine spent time with young people helping them find careers in science or technology.

Katherine made sure that computer calculations were correct and solved many problems by approaching them differently from the engineers she worked with.

Katherine worked for NASA for more than thirty years and, in 2015, she received the Presidential Medal of Freedom in honor of her service and contributions.