Answer: c and d
Explanation: idfk I have just been doing English long enough
C or A I’m not sure but go with the one u feel is the best
While soviets rejoiced in the attainment of the sputnik system, Americans feared soviet advancements in science.
<h3>What advancements made Sputnik possible?</h3>
Sputnik made the possible to study the radio wave transmission and density of the atmosphere easy. He also supported the scientist to learn to track objects in orbit. He encourages testing satellite pressurization. This made pressure to America for advance of technology.
Thus, option A is correct.
For more details about advancements made Sputnik possible, click here:
brainly.com/question/13588207
#SPJ1
