Answer: Katherine Johnson is an african american mathematical genius who worked for NASA. she paved the way for the space program, calculating orbit paths. launch windows, and emergency return paths for the program. the statement that best expresses the theme of this passage is ¨persistence and hard work can allow a person to break through barriers.¨ the passage highlights the importance of hard work and grit in achieving success in life. it also emphasizes the idea of challenging barriers and adversity to achieve ones goals.
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