I believe the best answer is the first sentence because that is where the action seems to occur.
Answer:
By making up for their mistakes and being a better person. Also by being respectful and following the rules.
Explanation:
The descriptive structure that both authors uses helps the reader to understand that space travel is a challenging mission and people have worked on its development for several decades to make it a possibility.
<h3>Who is an author?</h3>
An author is a person who creates or write something. Authors is the writer of a book. The name of the authors is published in the front and last of the book.
The options are attached:
A. space travel is a challenging mission and people have worked on its development for several decades to make it a possibility
B. space travel had a lot of problems in its early stages and scientists have only recently been able to resolve them
C. robots are slowly replacing human astronauts and beginning to travel to distant parts of the universe and study it
D. the history of space travel was far grander and richer than it is today because there were many more manned explorations.
Thus, the correct option is A.
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