Armstrong was a firm believer in space exploration, and his mission was a testament to his dedication and belief that America was destined to pursue it.
Correct option is B.
In the twentieth century, the creation of rockets, as well as developments in electronics and other technologies, made it possible to send machines, animals, and eventually people beyond Earth's atmosphere and into space.
Space travel has already attracted the imaginations of many people, including not only pilots and scientists, but also writers, even before technology made these achievements possible.
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