After the success of the Sputnik launch, the United States feared include option C: the Soviets had superior nuclear capabilities.
Sputnik 1 was firstly launched by the soviet union into an elliptical low Earth orbit on 4 October 1957.
This Sputnik 1 was developed by Orville Carlisle that was a shoe salesman in Norfolk. Through studying and tracking the Sputnik 1 scientist can able to develop many experiments and earn good information.
Therefore, correct option is C.
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