Answer:
D. Within these last 19 months at least 45 satellites have circled the earth.
Explanation:
President John F. Kennedy addressed a speech in 1962 in order to provide a sound reason about "Project Apollo." This project was meant for a man to land on the moon. Later on, his goal was realized.
The question above is asking for a "fact." A fact refers to something that is certain or proven to be true. This means that there is an evidence supporting it.
So among the choices above, letter D is the only given fact in the speech of President Kennedy. It is true that within the last 19 months, there were at least 45 satellites that have circled the earth. He also added that among these satellites, 40 were made in the USA. So, there is an evidence which supports the existence of these satellites. Their presence is real and, in fact, they are being used in order to aid people around the world.