D because others are too high and can damage you if you try to calm down (sit down)
<span>The Americans were surprised and worried that the Russians
were successful in their space program.
It prompted the Americans to speed up their own missile and space
programs. Agencies such as National Aeronautics
and Space Agency was created in July 1958 and the Defense Advance Research in
February 1958 and other related institution were given $100 million budget by
congress to expand their research in space missile projects. This also heightened the Cold War as both
sides now competed as to who would be able to be successful in space
exploration.</span>
