Question

select the correct answer. 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

Explanation:

In the early 20th - century, these scientists were driven by the spirit of exploration of space, often referred to as "the last frontier". Artificial - satellite launches became more prominent later. The space race was a Cold - War era phenomenon, and using rockets for spying or war was not their primary motivation.

Answer:

B. to explore "the last frontier"