I believe the answer is letter D. This being the only one that seems to relate best with the topic sentence.
The answer is D: A magazine article describing how people's lives have been improved by products developed as a result of the space program.
The most compelling piece of evidence is to show —like the article of the magazine does, which would have to be founded on evidence that could be corroborated— how and in what sense the lives of human beings have been improved by space exploration and showing, also, that these benefits outweigh the cost of space exploration.
I believe its Block Format.
Answer:
A essential task
Explanation:
Mandatory you have no choice; compulsory you have to do it; essential is the only choice left