Well this is a very opinionated question but personally:
Astronauts improve society by using the newest and most expensive technology to be able to explore space as we know it.
Answer:
B. It created intense rivalries and competition for colonies.
Explanation:
Such rivalries and competition for colonies were reflected in the Berlin Conference in 1885, which was also coloquially known as "The Division of Africa", the construction of alliances (Central States, Entente Cordiale) that ignited World War I.
The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.
The answer is not true. It's false