Question

What caused scientists such as Robert Goddard, Konstantin Tsiolkovsky, and Hermann Oberth to experiment with rocket technology in the early twentieth century?
A)to launch of artificial satellites

B)to explore "the last frontier"

C)to help their countries win the space race

D)to help their government spy on enemies

E)to gain victory in wars

Answer 1

The best and most correct answer among the choices provided by the question is the second choice. The cause of studying rocket technology was that to explore the "last frontier". I hope my answer has come to your help. God bless and have a nice day ahead!

Answer 2

to explore "the last frontier"