Option B. One of the most clear themes of "Exhalation" is that the scientific method can reveal important truths about existence.
Explanation:
In the short-story "Exhalation" written by author Ted Chiang, one of the main themes is how important the scientific method can be to help reveal important truths about existence. In fact, the whole plot starts from a scientist taking a risk and experimenting with his own brain, in order to test a commonly accepted theory, just to find out the truth about his planet's life existence is something completely different from what everyone always believed. Science and its importance is present throughout the story, and it clearly constitutes one of the themes of "Exhalation", while the other important one being the importance of accepting life as it is, with its changes and even with its unfairness, and to learn how to appreciate it all as a part of a journey.
